only convert GL argument to a string if cue number is passed

OscMacroDefinitions.py

@@ -166,9 +166,10 @@ class HogDevice():
 
     def _list_go(self, ctx):
         for i in ctx.targets:
-            list = str(i)
             if ctx.number is not None:
-                list += "." + str(ctx.number.value)
+                list = str(i) + "." + str(ctx.number.value)
+            else:
+                list = i
             logger.info("Go on List " + list)
             self.osc.send_message(ctx.device, "/hog/playback/go/0", list)