FLStudio includes a wide range of plugins: generators, tools and effects. However most of these are FLStudio format only. Which means they only work in FLStudio.
If they are available as a VST or AU format ...
MIDI Out and they don't seem to be MIDI CC. I've even gone as far as building a MIDI CC monitor and running it in FL, still no dice.
Are the messages FL architecture exclusive? VST SDK? Host Messages? ...