Event: Buttmode == True
Sub-Event: ExtraButt == True
Sub-Event Actions: ButtPoints += 1000
Sub-Event: (empty)
Sub-Event Actions: ButtPoints += 10
ButtMode = False
ExtraButt = False
I'm not sure I understood your events, but I guess this would work.
There are two sub-events to the main event, and one fires right after the other.
If ExtraButt == True, then it adds 1000 points, and right after it runs the second sub-event, which adds 10 points and sets everything to false.
If ExtraButt == False, then only the second one fires