variable value problem

Hi All,

Please can someone help me as I don't have much hair left.

I'm using FSX - PMDG737 - FSUIPC - SIOC connected to a USB outputs card to light an LED.
The code works but the state of the light does not stay as 1, the variable changes itself back to 0.

It works fine when PMDG737 is not running.

I don't know what is going wrong?

problem solved.
It turned out that I needed to update to PMDG NGX SP1D.
Once things were done in the right order on the updated software it worked.
Just updating here cos I hate seeing threads with no conclusion!
Hope this helps someone.