Assigning pitch trim

[arrowspace90]

Im getting no pitch trim with the default settings on my Boeing Yoke, which has split rocker switches.

I went to the specific pitch trim for CL-650 and tried assigning one of the rocker switches to "Electric Pitch Trim".  But I see no changes in settings on the screen.  It's tough that no trim wheel is available to see.  Is this the right way?  Does any bus or system beyond the APU generator have to be turned on?  How do you assign it?

[Pils]

5 hours ago, arrowspace90 said:

How do you assign it?

sim/flight_controls/pitch_trimA_up and down
sim/flight_controls/pitch_trimB_up and down