How to fire a missile in f-14b through external FDM

[Raghav]

Dear All

I am able to fire a missile in F-14B aircraft in flight gear but when i am trying to use the external FDM (development purpose) for F-14B aircraft i am not able to fire a missile even making all pre-requisite conditions true for the aircraft . How to fire a missile in F-14B if i am using external FDM model

Warm Regards