Buttons click and hold action

1

Hello,

Probably really easy but can’t think how to do it! I need an action to be continually repeated while a button is being pressed.
At the moment it just rotates the selected movieclip by 10. The button has to be pressed again and again to change the rotation.

angleRight.onPress = function () {
_root.selected._rotation = _root.selected._rotation +=10;
};

I need a method where the angle can be changed as smoothly as possible.

Any ideas?

Thanks