corrected bug in queue length check

mqtt_manager.py

@@ -28,7 +28,7 @@ def get_State(tl_id):
 
 def checked_ql(ql):
     max_queue_length = 16 # 15 # this is the maximum queue length for the road
-    return int(ql)>max_queue_length # for now, always return True, can be improved later to check if the queue length is valid or not
+    return int(ql)<max_queue_length # for now, always return True, can be improved later to check if the queue length is valid or not
 # ------------------ Listener ------------------ #
 def mqtt_listener():
     def on_message(client, userdata, message):