No Gate Marking on Jet Bridge

[Juergen2]

Hi,
In my FSX-SE I am trying to add a gate number to my jet bridge (GSX jet bridge) in customize jet bridge I can change font, font size and other parameters, but I do NOT see the position board with the background color and the text in it. The position number board is blank and does not change with editing parameters.
Thanks for help

[virtuali]

Quoting from GSX Manual, Page 46, where Jetway Number is explained:

Gate Number (Prepar3D 4+ only)

This feature use the new “Render To Texture” ( RTT ) option, only available in the P3D4 PDK, so it’s not available on FSX or P3D 1/2/3.

[Juergen2]

Thank you Umberto
[next time I'll check the manual first]