How do I Simulate button push with touch input?

I have a complicated movement setup so I can have a double jump in my game and when I tried to use the simple Touch Control tutorial to create touch buttons for tablets and phones I ran in to some issues. For some reason the double jump is not working and the mirrored sprite when moving left is a little goofy. Any creative ideas how I can solve this issue? I can go in to more detail or post some project information if needed.

Thank you.

Button/Sprite - on push

• if doublejump is 0 - set doublejump to 30
• else "perform doublejump (insert your doublejump code here)"

Every step

Substract from doublejump variable 1*dt

With this code the user has 30 frames (or 0.5 Seconds) time to perform a double jump by tapping the button/sprite again.