Toggle mute all/ unmute

Anyone know how to do this on one button on midi maestro? I can’t get it to work

Found this in the MIDI Command spreadsheet. Toggle CC:38 value 0 (mute all) and value 127 (unmutes all). Works for me.


Value 1-6: Mutes/Unmutes track (track # = value #)
Value 0: Mutes all tracks
Value 127: Unmutes all tracks

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