how to send OSC without value?

[jetryco]

To get the current value of e.g. a fader in a xAir-mixer (XR18, X32 etc.) you send the OSC message with no value/parameter.

• How to do that?

I have tried patterns like:

  /ch/01/mix/fader = 
  /ch/01/mix/fader
  /ch/01/mix/fader = none
  /ch/01/mix/fader = :

But none of them worked.