I've been using the command /cs/key/ind2
I recently updated to 188.8.131.52 and it seems to have stopped working.
I was also playing with setting a playback slider to a level with osc.
/cs/playback/11/level/x. I get no response from this command. I do get a response from /cs/playback/11/fire/1
The OSC command should be /cs/playback/X/level = value (0.0-1.0)
0.0 is fader at the bottom, 1.0 is fader at full.
How you enter the value depends on your OSC application, most OSC apps that support faders have a Min Value and Max Value you can enter.