FL Studio Map Pitch and Mod Wheel
Pitch Bend
Set "Send pitch bend range" to 2 so that pitch bends will default to -1/+1 octave (or whatever it's set to inside the plugin)
Go to "Current Project > Remote control > Omni - Channel pitch"
Mod Wheel
Find out the channel input of your midi controller
Go to "Current Project > Generators > YOUR NAMED SYNTH" and find MIDI CC #1
Make sure to check Omni and set Port to YOUR CONTROLLER and Channel and Ctrl to 1