Best way to Toggle M1 Shift State and keep it locked? Toggle on/off?

Best way to Toggle M1 Shift State and keep it locked? Toggle on/off?

In traktor do any of you MIDI ninjas know how to toggle a modifier on and off and have it stay toggled on and off?

Add in Modifier 1
Modifier conditions / M1=0
Type of controller-button
Interaction mode-direct
Set to value-1

Add in Modifier 1
Modifier conditions / M1=1
Type of controller-button
Interaction mode-direct
Set to value-0

You are a godsend!

Anytime mate!