"stop_effect_button" macro

I can't seem to get the "stop_effect_button" to do anything in a macro I'm writing? Can't get it to work in any from. Is there a particular way you need to use it with syntax? I'm making a simple macro that will run an effect on a group of lights (to check their color and orientation) and then stop the effect after the lights are checked. Nothing I try in the macro will stop the effect. Thanks for any help...

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