RFC Function Call problem

Hi Experts,

My problem is, I am not able to reach to the Function Module,which is RFC enabled,when it is executed through the Event(Event firing the FM)

Acutally,my scenario is in CRM.I am updating the status of preceding document from present,so i fire an event and this event calls the FM.

Now i want to see this function module's work as it is working something and sometime it is not.

Can any of you experts help me out to find how to debug it...

Thanks,

SA