diff --git a/AppServer/LocationThread.cs b/AppServer/LocationThread.cs
index 19efcf9..37b454d 100644
--- a/AppServer/LocationThread.cs
+++ b/AppServer/LocationThread.cs
@@ -262,6 +262,7 @@ namespace AppServer
                                             {
                                                 continue;
                                             }
+
                                             //get unit system position
                                             int unitSC_ID = ((Vehicle_Data)MainForm.VehList[radioID2]).sc_id;
                                             UnitSysPosition sysPos = DBvehInfo.getSystemPosition(unitSC_ID);
@@ -271,7 +272,8 @@ namespace AppServer
                                             //send radio disable to GW
                                             Utils.WriteLine("Radio disable was sent on " + sysPos.Gw_id + "." + sysPos.R_gw_id + " gateway", ConsoleColor.Cyan);
                                             string test2 = $"#{(int)MessageBusCmds.RadioEnableDisableRequest}#" + dest + "#0#";
-                                            MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test2), Utils.Convert_text_For_multicast("#0.0" + test2).Length);
+                                            byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test2);
+                                            MainForm.udp.Send(dataToSend, dataToSend.Length);
                                         }
                                         catch (Exception ex)
                                         {
@@ -349,9 +351,13 @@ namespace AppServer
                                 try
                                 {
                                     string test2 = "#210#1#Can't write GPS data in DB#";
-                                    if (ex.Message == "AlarmError") test2 = "#210#5#Can't write Alarm data in DB#";
-                                    else if (ex.Message == "StolenError") test2 = "#210#6#Can't write Stolen data in DB#";
-                                    MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test2), Utils.Convert_text_For_multicast("#0.0" + test2).Length);
+                                    if (ex.Message == "AlarmError")
+                                        test2 = "#210#5#Can't write Alarm data in DB#";
+                                    else if (ex.Message == "StolenError")
+                                        test2 = "#210#6#Can't write Stolen data in DB#";
+
+                                    byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test2);
+                                    MainForm.udp.Send(dataToSend, dataToSend.Length);
                                 }
                                 catch (Exception ex2)
                                 {
@@ -397,7 +403,10 @@ namespace AppServer
                         {
                             // send callout clear
                             string test = "#178#" + callout.RadioID.ToString() + "#" + callout.Severity + "#";
-                            MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test), Utils.Convert_text_For_multicast("#0.0" + test).Length);
+
+                            byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test);
+                            MainForm.udp.Send(dataToSend, dataToSend.Length);
+
                             Utils.WriteLine($"Sent CallOut Stop request with Severity [{callout.Severity}] for unit {callout.RadioID.ToString()} ");
                         }
                     }
@@ -578,7 +587,8 @@ namespace AppServer
                                         {
                                             //send alarm on message buss
                                             test = "#136#" + radioID.ToString() + "#" + tmpresp + "#";
-                                            MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test), Utils.Convert_text_For_multicast("#0.0" + test).Length);
+                                            byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test);
+                                            MainForm.udp.Send(dataToSend, dataToSend.Length);
                                         }
 
                                         String date = DateTime.Now.ToUniversalTime().DateTo70Format().ToString();
@@ -606,7 +616,10 @@ namespace AppServer
                                                     tmpX = dbvehs.getSystemPosition(Convert.ToInt32(keyobj));
                                                     
                                                     test = "#142#" + tmpX.Gw_id + "." + tmpX.R_gw_id + "." + (String)tmpHashName[keyobj] + "#" + /*"Message from unit " + ((Vehicle_Data)MainForm.VehList[radioID.ToString()]).Name + " :" +*/ obj2.msgbody + "#" + date + "#";
-                                                    MainForm.udp.Send(Utils.Convert_text_For_multicast("#0." + date + test), Utils.Convert_text_For_multicast("#0." + date + test).Length);
+
+                                                    byte[] dataToSend = Utils.Convert_text_For_multicast("#0." + date + test);
+                                                    MainForm.udp.Send(dataToSend, dataToSend.Length);
+
                                                     Thread.Sleep(100);
 
                                                     Utils.WriteLine($"Zone alert sms request [{obj2.msgbody}] for unit {(String)tmpHashName[keyobj]} on gw [{(tmpX.Gw_id + "." + tmpX.R_gw_id)}]");
@@ -617,8 +630,9 @@ namespace AppServer
                                         if (obj2.sentmsg2 && sendOnMsgBus)
                                         {
                                             tmpX = dbvehs.getSystemPositionIMEI(radioID);
-                                            test = "#142#" + tmpX.Gw_id + "." + tmpX.R_gw_id + "." + radioID + "#" + obj2.msgbody2 + "#" + DateTime.Now.ToUniversalTime().DateTo70Format().ToString() + "#";                                            
-                                            MainForm.udp.Send(Utils.Convert_text_For_multicast("#0." + date + test), Utils.Convert_text_For_multicast("#0." + date + test).Length);
+                                            test = "#142#" + tmpX.Gw_id + "." + tmpX.R_gw_id + "." + radioID + "#" + obj2.msgbody2 + "#" + DateTime.Now.ToUniversalTime().DateTo70Format().ToString() + "#";
+                                            byte[] dataToSend = Utils.Convert_text_For_multicast("#0." + date + test);
+                                            MainForm.udp.Send(dataToSend, dataToSend.Length);
 
                                             Utils.WriteLine($"Zone alert sms request [{obj2.msgbody2}] for unit {radioID} on gw [{(tmpX.Gw_id + "." + tmpX.R_gw_id)}]");
                                         }
@@ -628,7 +642,8 @@ namespace AppServer
                                         {
                                             tmpX = dbvehs.getSystemPositionIMEI(radioID);
                                             test = "#177#" + radioID.ToString() + "#" + obj2.calloutSeverity + "#" + obj2.name + "#";
-                                            MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test), Utils.Convert_text_For_multicast("#0.0" + test).Length);
+                                            byte[] dataToSend = Utils.Convert_text_For_multicast("#0." + test);
+                                            MainForm.udp.Send(dataToSend, dataToSend.Length);
 
                                             callOutQueue.PostItem(new CallOut() { RadioID = radioID, Severity = obj2.calloutSeverity, Time = DateTime.Now});
                                             Utils.WriteLine($"Zone CallOut request with Severity [{obj2.calloutSeverity}] for unit {radioID} on gw [{(tmpX.Gw_id + "." + tmpX.R_gw_id)}]");
@@ -684,14 +699,16 @@ namespace AppServer
                                     {
                                         //send alarm on message buss
                                         string test = "#137#" + radioID.ToString() + "#" + tmpresp + "#";
-                                        MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test), Utils.Convert_text_For_multicast("#0.0" + test).Length);
+                                        byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test);
+                                        MainForm.udp.Send(dataToSend, dataToSend.Length);
                                     }
                                     
                                     //send CallOut
                                     if(obj2.callout && tmpresp.ToString().Contains("IN "))
                                     {
                                         string test = "#177#" + radioID + "#" + obj2.calloutSeverity + "#" + obj2.name + "#";
-                                        MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test), Utils.Convert_text_For_multicast("#0.0" + test).Length);
+                                        byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test);
+                                        MainForm.udp.Send(dataToSend, dataToSend.Length);
 
                                         callOutQueue.PostItem(new CallOut() { RadioID = radioID, Severity = obj2.calloutSeverity, Time = DateTime.Now });
                                         Utils.WriteLine($"Landmark CallOut request with Severity [{obj2.calloutSeverity}] for unit {radioID} ");
@@ -760,6 +777,7 @@ namespace AppServer
                     //send alarm on message buss
                     string speed4send = $"{speed}_{speedUnits}";
                     string test = "#135#" + radioID.ToString() + "#" + speed4send + "#";
+
                     MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0" + test), Utils.Convert_text_For_multicast("#0.0" + test).Length);
                 }
             }
diff --git a/AppServer/MulticastListener.cs b/AppServer/MulticastListener.cs
index f6b9a46..d24705f 100644
--- a/AppServer/MulticastListener.cs
+++ b/AppServer/MulticastListener.cs
@@ -729,8 +729,8 @@ namespace AppServer
                             string message = string.Format("Ticket no. {0} is no longer active!", dec3.delete_ticket_id);
                             string test1 = "#143#" + sysPos.Gw_id + "." + sysPos.R_gw_id + "." + radioID3 + "#" + message + "#" + 0 + "#";
 
-                            byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test1);
-                            MainForm.udp.Send(dataToSend, dataToSend.Length);                                    
+                            byte[] cmd = Utils.Convert_text_For_multicast("#0.0" + test1);
+                            MainForm.udp.Send(cmd, cmd.Length);                                    
                         }
                         //send to email if was sms->email type
                         if (dec3.isEmail)
@@ -738,12 +738,11 @@ namespace AppServer
                             sendMail(dec3.emailAddr, dec3.messBody, radioID3);
                         }
                         //send ACK back to GW
-                        test = "";
-                        if (dec3.sqlResp == sqlResponse.done)
-                            test = "#232#1#";
-                        else
-                            test = "#232#0#";                        
-                        MainForm.udp.Send(SafeMobileLib.Utils.Convert_text_For_multicast("#" + seqID3 + test), SafeMobileLib.Utils.Convert_text_For_multicast("#" + seqID3 + test).Length);                                    
+                        test = (dec3.sqlResp == sqlResponse.done) ? "#232#1#" : "#232#0#";
+                        
+
+                        byte[] dataToSend = Utils.Convert_text_For_multicast("#" + seqID3 + test);
+                        MainForm.udp.Send(dataToSend, dataToSend.Length);                                    
 
                         if (MainForm.SendPOLLafterSMS)
                         {
@@ -753,7 +752,7 @@ namespace AppServer
                             string dest = $"0.0.{radioID3}";
                             if (sysPos != null) dest = $"{sysPos.Gw_id}.{sysPos.R_gw_id}.{radioID3}";
 
-                            byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0#154#" + dest + "#");
+                            dataToSend = Utils.Convert_text_For_multicast("#0.0#154#" + dest + "#");
                             MainForm.udp.Send(dataToSend, dataToSend.Length);                                    
                         }
                     }
diff --git a/AppServer/Program.cs b/AppServer/Program.cs
index 5c811fe..2861d23 100644
--- a/AppServer/Program.cs
+++ b/AppServer/Program.cs
@@ -215,8 +215,8 @@ namespace AppServer
             Thread.Sleep(2000);
             try
             {
-                MainForm.udp.Send(SafeMobileLib.Utils.Convert_text_For_multicast("#0.0#210#4#Application server stopped#"),
-                Utils.Convert_text_For_multicast("#0.0#210#4#Application server stopped#").Length);
+                byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0#210#4#Application server stopped#");
+                MainForm.udp.Send(dataToSend, dataToSend.Length);
 
                 // save all unhandled gps positions 
                 MainForm.DumpLocationQueueToFile();
@@ -240,8 +240,10 @@ namespace AppServer
 
             Thread.Sleep(2000);
             try
-            {                
-                MainForm.udp?.Send(SafeMobileLib.Utils.Convert_text_For_multicast("#0.0#210#4#Application server stopped#"), SafeMobileLib.Utils.Convert_text_For_multicast("#0.0#210#4#Application server stopped#").Length);
+            {
+
+                byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0#210#4#Application server stopped#");
+                MainForm.udp?.Send(dataToSend, dataToSend.Length);
 
                 // save all unhandled gps positions 
                 MainForm.DumpLocationQueueToFile();
diff --git a/AppServer/RegistrationThread.cs b/AppServer/RegistrationThread.cs
index 58bb322..14926d0 100644
--- a/AppServer/RegistrationThread.cs
+++ b/AppServer/RegistrationThread.cs
@@ -107,9 +107,10 @@ namespace AppServer
                                     + Program.cfg.msgBusIP.ToString() + ";" + Program.cfg.msgBusPort + ";" + databaseIP + ";"
                                     + Program.cfg.DB_schema + ";" + Program.cfg.DB_user + ";" + Program.cfg.DB_passwd
                                     + ";" + Program.cfg.DB_port + ";" + Program.cfg.VoicePort + ";"
-                                    + audibleAlerts.ToString() + ";" + MainForm.dbAccess.ToString() + ";";                                                   
-                                MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0#156#" + command[1].Trim() + "#"), Utils.Convert_text_For_multicast("#0.0#156#"
-                                    + command[1].Trim() + "#").Length);
+                                    + audibleAlerts.ToString() + ";" + MainForm.dbAccess.ToString() + ";";
+
+                                byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0#156#" + command[1].Trim() + "#");
+                                MainForm.udp.Send(dataToSend, dataToSend.Length);
 
                                 MainForm.RegistrationAnswer = false;
                                 Int32 countWait = 0; //maxim 30 = 3 seconds
diff --git a/AppServer/VoiceRecording.cs b/AppServer/VoiceRecording.cs
index d325ed5..d48f125 100644
--- a/AppServer/VoiceRecording.cs
+++ b/AppServer/VoiceRecording.cs
@@ -171,8 +171,10 @@ namespace AppServer
                     DBrec.addRecording(rec);
 
 
-                    test = $"#155#{rec.id}#{rec.hddLocation}#{rec.gwID}#{rec.radioGWID}#{rec.group_cpsId}#{rec.subs_imei}#{rec.startTime}#{rec.endTime}#{rec.typeSD}#{rec.calltype}#{rec.dispatcher_id}#";                    
-                    MainForm.udp.Send(SafeMobileLib.Utils.Convert_text_For_multicast("#0.0" + test), SafeMobileLib.Utils.Convert_text_For_multicast("#0.0" + test).Length);                                         
+                    test = $"#155#{rec.id}#{rec.hddLocation}#{rec.gwID}#{rec.radioGWID}#{rec.group_cpsId}#{rec.subs_imei}#{rec.startTime}#{rec.endTime}#{rec.typeSD}#{rec.calltype}#{rec.dispatcher_id}#";
+
+                    byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0" + test);
+                    MainForm.udp.Send(dataToSend, dataToSend.Length);                                         
                 }
             }
             catch (Exception ex)
diff --git a/SafeMobileLIB_DLL/GeneralLocationManager.cs b/SafeMobileLIB_DLL/GeneralLocationManager.cs
index a996045..ae990a1 100644
--- a/SafeMobileLIB_DLL/GeneralLocationManager.cs
+++ b/SafeMobileLIB_DLL/GeneralLocationManager.cs
@@ -90,8 +90,9 @@ namespace SafeMobileLib
         public void SendOnMsgBuss(string seqID, string test)
         {
             if (udpMulticast != null)
-            {                
-                udpMulticast.Send(Utils.Convert_text_For_multicast("#" + seqID + test), Utils.Convert_text_For_multicast("#" + seqID + test).Length);                
+            {
+               byte[] dataToSend = Utils.Convert_text_For_multicast("#" + seqID + test);
+               udpMulticast.Send(dataToSend, dataToSend.Length);                
             }
             else
             {
diff --git a/SubscriberAndUserManager/controlSettings.cs b/SubscriberAndUserManager/controlSettings.cs
index f13347e..69a365e 100644
--- a/SubscriberAndUserManager/controlSettings.cs
+++ b/SubscriberAndUserManager/controlSettings.cs
@@ -835,19 +835,28 @@ namespace SubscriberAndUserManager
         }
 
         private void SendBackupListRequest()
-        {            
-            if(MainForm.udp != null)
-                MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0#53#1#"), Utils.Convert_text_For_multicast("#0.0#53#1#").Length);
+        {
+            if (MainForm.udp != null)
+            {
+               byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0#53#1#");
+               MainForm.udp.Send(dataToSend, dataToSend.Length);
+            }
         }
         private void SendBackupRequest()
-        {            
+        {
             if (MainForm.udp != null)
-                MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0#51#1#"), Utils.Convert_text_For_multicast("#0.0#51#1#").Length);
+            {
+                byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0#51#1#");
+                MainForm.udp.Send(dataToSend, dataToSend.Length);
+            }
         }
         private void SendRestoreRequest(string filename)
-        {            
+        {
             if (MainForm.udp != null)
-                MainForm.udp.Send(Utils.Convert_text_For_multicast("#0.0#52#" + filename + "#"), Utils.Convert_text_For_multicast("#0.0#52#" + filename + "#").Length);
+            {
+                byte[] dataToSend = Utils.Convert_text_For_multicast("#0.0#52#" + filename + "#");
+                MainForm.udp.Send(dataToSend, dataToSend.Length);
+            }
         }
 
         delegate void UpdateList(string fileNames);