Hi,
Been banging my head against the wall on this.
I'm trying to do a repaint of a 1979 C-152. In that year, Cessna put the N-Number in small characters on the vertical tailplane (piss me off they mirrored one of the textures on the tailplane, what were they thinking?), so I'd like to turn off the N-Number decals on the fuselage and underside of the wing.

if I set atc_id= "" The N-Number on the fuselage turns off, but, then ATC doesn't know who I am.
I've tried setting atc_id_enable = 0, "0", and 2, no effect on N-number visibility
I tried setting atc_id_color = "#000000000", hoping that would make it transparent... MSFS ignored it and the N-number is still white. Or maybe transparent is just white?

I have not been able to figure out how the N-number decal is applied to the fuselage.

I searched the SDK and couldn't find any reference to these variables.

Any ideas?
Is it a bug that atc_id_enable doesn't work?

Edit: Apparently atc_id_enable only controls whether the user can edit it in startup UI...

Edit: So if I leave atc_id blank, how does the built in ATC know who I am? Yes, I enjoy using the ATC function in the sim...