Floating button only working once..Help

Mkb

New member
Hi...I have a floating button set to rotate 180 vertical. I need to turn the screen upside down and then back to normal.

I have it to flip it..but I can't figure out how to be able to hit button again and have it rotate back the other way. I need a toggle like button. I have tried for over an hour and am frustrated. ANY HELP WILL BE GREATLY APPRECIATED!!

Thank you
 
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