How to Use the Custom User Preset Model?

[clevername27]

Is anyone familiar with the Custom User Preset Model, and perhaps could help?

I've written this test, but as the documentation instructs, I need to first save the object before I can use Object Persistence. How do I do this, and am I on the right track (below)? Thank you.

const var internalPresetHandler = Engine.createUserPresetHandler();

inline function LoadHostPluginData (obj) {

	Engine.showMessageBox("Load", obj.testItem, 2);
};

inline function SaveHostPluginData () {

	return { "testItem": 7 };
}

internalPresetHandler.setUseCustomUserPresetModel(LoadHostPluginData, SaveHostPluginData, true);

EDIT: Solution was to create the file by referencing it in the API.