Injecting formfield options dynamically

[mamrezn7]

Having messed around with Form.js for a couple weeks, i still cant get my head around how i can programmatically inject options into multi option form fields, for example i need to fetch the data on the react project i have already set up, and inject it without calling the importSchema() method. i cant call this method since it causes rerenders on the whole form and i lose all the data i have typed in the form while i was waiting for my fetch to return the data. updating schema and adding the desired elements to the DOM has been done, but the validation ignores the updated schema because it was updated after importSchema was called.
there must be something im missing here, please help me out.