How to initial value from ACF checkbox and relationship

Hey everyone. I finally decided to build more complex forms with the use of Bricksforge. Everything is working correctly but I cant figure out, how to populate initial data for checkbox and relationship fields when you work with edit post form.

I use the brf dynamic tags, not sure if there is syntax error but it crashes the form - doesnt render at all onLoad

This is example for relationship field:

This is example for checkbox field:

Thanks a lot for any ideas :slight_smile: