How do I get this pause working properly?

Hey. Trying to get a pause working here. Was following a simple tutorial n' everythign works just fine, but only if I use a different button to unpause. If I use the same button, the pause doesn't work. Can anyone help? Thanks.

Here's my horrible hacked together attempt.

Before the action set time scale to zero, I would add wait zero second action

That's excellent, guys. Thanks!