Release on an invisible button ! help!

I’ve been over this problem now for too long! :geek:
help please!

on my timeline, frame 1 to 5, I have an invisble button that make a rollover and a roll out (both functions working really well!)
On frame 5, there is a stop button.
I want to put a release on the invisible button to go at frame 10 called “start”.
I’ve tried so many thing and nothing would work out . . . I’m out of idea!

can somebody help me out? :ne: