AlarmReceiver module in Asterisk 11

Hello, I am trying to setup my alarm system with asterisk.
I read here

and I have exact the same problem. I got “== AlarmReceiver: Incomplete string: , trying again…” message.
I read in this post that it is better not to use Asterisk version 10 or 11, but I have already a full working FreePBX system with asterisk 11, so altering asterisk is not an option.
I think that the problem is maybe with DTMF but I don’t know if there is something I can do.
Sorry to create a new topic but the other topics about alarm receiver have been locked.
Do anybody has anything new about alarm receiver and asterisk 11 ?