ScriptNode knob works in HISE but unresponsive after export (FL Studio)

[Beng]

Hi, I have a FX plugin built in HISE with ScriptNode (following David Healey's tutorials). I have 1 main knob that controls multiple effects simultaneously (filter cutoff, reverb size, gain). When I turn the knob inside HISE everything works perfectly... all effects change as expected. But once I export and load the plugin in FL Studio, the effects are applied but completely fixed, turning the knob does absolutely nothing. The sound is affected by the plugin but always at the same intensity regardless of knob position. Any idea what could cause the knob to work in HISE but be completely unresponsive in FL Studio?