@pgaudioworks try someting like this, where "cmbSampleMap" is my Combo Box
// My Sample Map on Combobox
const var sampleMaps = Sampler.getSampleMapList(); // get a Sample Map List
const var cmbSampleMap = Content.getComponent("cmbSampleMap"); //combo box
const var Sampler1 = Synth.getChildSynth("Sampler1"); // Sampler Reference
// populate combo box with sample maps
cmbSampleMap.set("items", sampleMaps.join("\n"));
inline function oncmbSampleMapControl(component, value)
{
//Console.print(value);
Sampler1.asSampler().loadSampleMap(sampleMaps[value-1]);
};
Content.getComponent("cmbSampleMap").setControlCallback(oncmbSampleMapControl);