Problem with buttons

I have a button that I would like to play the “click” animation on the frame labeled “click” on press and continue to play even after the person were to roll off the button. My problem is that i can’t get it to do that. Everything works fine for the button other than that. Is there any AS that I can add to the button to achieve this effect? any help would be appreciated.
Here is what I have so far:

on (rollOver) {
on (rollOut) {
on (press) {

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