FNC Load JSON properties at runtime

What are the LoadFromJSONFile or LoadSettingsFromFile functions for in the WEB?
In VCL it works well, but how to use it in the WEB Miletus or other, currently no effect or Error!

ERROR
Object or array expected as top-level value | fMessage::Object or array expected as top-level value FJSError::Error: Object or array expected as top-level value fHelpContext::0
at http://localhost:38678/ProjectMiletusViewer.js [62032:34]

Hi,

LoadFromJSONFile and LoadSettingsFromFile are exposed at TTMSFNCCustomComponent level, but they are not yet implemented for WEB. We'll need to allocate time to investigate a proper solution for it.