{ Initialization when first loaded }
on init
  { Sets a message in Kontakt status bar }
  message("Initializing my script")

  { Turn on performance view and set size }
  make_perfview
  set_ui_height(1)
  
  { Create the knob UI element with its ranges }
  declare ui_knob $myCutoffKnob(0, 1000000, 1)
  { Position the knob X/Y (0-6/0-16) }
  move_control($myCutoffKnob, 2, 1)

  { Get the current value of parameter and display it }
  set_knob_label($myCutoffKnob, get_engine_par_disp($ENGINE_PAR_CUTOFF, -1, 0, 1))

  { Have the knob position stored as part of the instrument snapshot }
  make_persistent($myCutoffKnob)
end on

{ Callback when knob is twisted }
on ui_control($myCutoffKnob)
  
  { ENGINE_PAR_CUTOFF is for a filter effect, so
    the first INSERT effect needs to be a filter }
  set_engine_par($ENGINE_PAR_CUTOFF, $myCutoffKnob, -1, 0, 1)
  { set_engine_par(<parameter>, <value>, <group>, <slot>, <generic>)
     -1 = no specific group, apply to instrument
      0 = 1st effect in the list (slot 0)
      1 = insert effect (0 would be send effect) }

  { Update the UI label now that the value has changed }
  set_knob_label($myCutoffKnob, get_engine_par_disp($ENGINE_PAR_CUTOFF, -1, 0, 1))
end on