I don't know about your specific loco/decoder....but every one I have ever encountered.....and all my four brands use CV 29 values 2 and 3 (short address) or 32 and 33 (long address) or similar (see below) if using speed tables to reverse direction.
I believe these CV settings are universal.
These are also handy if you get the entire project back together with the shell on, and find that you have soldered the motor wires in reverse...easy to do if you have the motor out for checking before you solder it all up.