question

The issue in your code is how you update the global variable.

The "++" operator will increment a variable by one but the returned value is the old one. So your expression "OperatorBusy_Count = OperatorBusy_Count++" always sets the variable to 0. If you only use "OperatorBusy_Count++" or "OperatorBusy_Count += 1" your logic will work.

However, be aware that counting each indiviual task might overinflate the number. For example, transporting an item from one object to the next typically consists of 5 tasks: Move to item container, load item, break (allowing to interrupt this task sequence to load more items), move to destination and unload item.

So for what you might see as one task, moving the item, the tracked variable will get incremented five times.

Another possible approach might be to increment the TR whenever the operator changes from the "idle" state to a different one.

Or when the operator receives a new task sequence.