start stop token

MobileApp/app/src/main/java/com/example/lfrmobileapp/Communication.java

@@ -29,7 +29,7 @@ public class Communication {
     }
 
     public String telegram(boolean startStop, ArrayList<String> list){
-        String tel = "";
+        String tel = "aa";
         tel += "1"; //Autonomous mode
         if(startStop){
             tel += ";1";
@@ -44,6 +44,7 @@ public class Communication {
                 tel += ";1";
             }
         }
+        tel += "zz";
         return tel;
     }