In all cases, first make sure that in standalone mode everything runs just fine, all knobs and faders are serviceable.
In Fruity Loops this is a bit tricky, as this host does not handle some MIDI CC's, so that you have to set them manually.
1. Click on the Plug-in Options menu, select "Browse Parameters".
2. Turn a *virtual* knob or fader on your controller, so you can see the attached parameter highlighted in the FL left panel.
3. Right-click on the highlighted parameter, then select "Link to controller"; a window opens, simply move the adequate *physical* knob on the hardware controller: the parameter is now correctly assigned!
4. Do the same for all controls.