Wonder if any one can point me in the right direction.
Wanted to set up a key for landing lights and a few others.
So for example, in a normal MicroSoft Cessna 172 I bound:
F1 to "LANDING_LIGHTS_TOGGLE"
F2 to "TOGGLE_AIRCRAFT_EXIT"
F3 to "TOGGLE_JETWAY"
It worked with out issue.
Now with the PMDG 737 NGX loaded.
F1 would not work
F2 and F3 would still work.

Also tried F1 with ^l without it working.
Checked the FMC? that it had keys CTRL+L set as lights, yes they were.
If I type [CTRL] L on either keyboard, the lights come on.
Any ideas?
Windows 7, 1xDell & 1xHP keyboard.
FSX & PMDG 737 NGX
Regards
S