Edit Form to get updating from API

Summary:

Created Edit form from BO and I want after clicking Edit some of the fields get values from API

Content (required):

I have BO

I used data pallete to create edit form.

Some of the fields I want them to get values from API.

When I assigned them as variable to the field. it shows up for seconds and disappeared. I am doing vEnter for the API to be loaded before page load. then I use it through variables on the page level to put them in the fields required to be updated by the API data.

I feel some reset functionality is there. Or