Hiding action until Flash game complete

Hi guys,

wondering if I could get some help with this problem. I have a simple 'reveal' flash game in my course which reveals an image that the learner must familiarize themselves with before moving on. I know that students are just going to click forward before going through the whole game. So I wanted to hide the forward button until the game is complete.

Is there a way to do this? What action must I input so Lectora knows when the game is completed and can then show the forward button.

thanks for your help.

J.