@Rognvald I found this as a starting point.. :)

const var Knob = Content.getComponent("Knob"); const TH = Engine.createTransportHandler(); // 18 = tempo factor = 1/64T TH.setEnableGrid(true, 18); // Set sync mode Internal or External TH.setSyncMode(TH.PreferExternal); // ON GRID CHANGE FUNCTION // You start and stop this using "TH.startInternalClock" & TH.stopInternalClock inline function GridChange(clock, arg2, arg3) { local v = (clock % 200) / 100; local value = v < 1.0 ? v : 2 - v; // Trigger the knob Knob.setValue(value); Knob.changed(); }; TH.setOnGridChange(true, GridChange); inline function onKnobControl(component, value) { Console.print(value); }; Content.getComponent("Knob").setControlCallback(onKnobControl); // START STOP INTERNAL CLOCK inline function onStartInternalClockControl(component, value) { if (value) TH.startInternalClock(0); else TH.stopInternalClock(0); }; Content.getComponent("StartInternalClock").setControlCallback(onStartInternalClockControl);

Good morning Sir and thank you! yes "loadFile" not "setFile" and "slots[]"
Maybe I will sleep now :)

inline function onKnS2Control(component, value) { slots[1].loadFile("{PROJECT_FOLDER}"+inst2[value]); }; Content.getComponent("KnS2").setControlCallback(onKnS2Control);

Thanks for your time guys!
this is the script that got things running smooth. :)

const var snailFader = Content.getComponent("snailFader"); snailFader.setAnimation(lottie); const lottieData = snailFader.getAnimationData(); // Snail Slider to Control Knob / hidden Content.getComponent("KNsnailFader").setControlCallback(onKNsnailFaderControl); const var KNsectionKnob1 = Content.getComponent("KNsectionKnob1"); inline function onKNsnailFaderControl(component, value) { snailFader.setAnimationFrame(value); KNsectionKnob1.setValue(value * 0.0033); KNsectionKnob1.changed(); };