Tweening between frames not working?

Hi, everyone!

There’s two frames and I created a button in frame1 that it will tween its tint from grey to red color(using tweenmax) whenever mouse over and out. It will go to frame2 when the button got clicked, and on entering frame2 the button will remain in red color. Also in frame2 I set the button will return to grey color and it will return to frame1 when the button got clicked.

The button works fine for the first round as it change its color and switch the frames. However, it didn’t remain in red color for the second round I clicked it (It still responsed to mouse over and out).

Any suggestions will be appreciated, thanks!!