Setting cue point in M4L

Hello,

I try to add cue points based on MIDI signal.
Should be easy to do ! but I can't and don't know why...

I looked at the Max Help - LOM + on cyclin' M4L forums : this question appears several time, but I still can't do it !

this is basically what I would like to do (well Im' quite new on M4L, and have probably a bad understanding of LOM) :

So could someone explain me where is the error, and how to dynamically add a cue on Live using a bang ? :)

Thanks

Bye