Find a Function Module in Update Task dynamically called

Hello experts, I have a question regarding how you can find a function module in Update Task in which place it is called. If it is a constant and you put in the Constant the name of the Function Module, than you will not receive any result on the Where Used List Search. If you put a Break-point in your Function and then in the System Debugging you flag the property to be able to make debugging on a Function Module in Update Task than you will don't have the Stack where it is called the Function Module, because it is in Update Task, and it is executed when it meet the COMMIT WORK. Is there a nice posibillity to find? or the last posibillity is to make debugg or to search it manually till you find it. Thank you.