TFlipFlop

[Button]
Meter=Shape
Shape=Ellipse 15,15,15 | Fill Color 255,255,255,255 | StrokeWidth 0
LeftMouseUpAction=[!UnPauseMeasure TFlipFlop][!UpdateMeasure TFlipFlop]

[TFlipFlop]
Measure=Calc
Formula=1

Paused=1
OnUpdateAction=[!PauseMeasure "TFlipFlop"]

IfCondition=TFlipFlop=0
IfTrueAction=[!SetOption TFlipFlop Formula "1"]
IfCondition2=TFlipFlop=1
IfTrueAction2=[!SetOption TFlipFlop Formula "0"]