if(%1 != null, set(layer[buttonglow].parent, %1); set(layer[buttonglow].visible, true); tween(layer[buttonglow].alpha, 0.7, 0.07); , tween(layer[buttonglow].alpha, 0.0, 0.1, default, set(layer[buttonglow].parent, null); set(layer[buttonglow].visible, false); ); );