Hi, I”m having a similar issue / need with a radio button.
Once set “on” I want a relationship field populated.
I’ve been hammering on the
acf.ajax.update but not sure what your 'cpt' is, is it the field name? field ID?
And does this update your field automatically? I tried with both my relationship field, and a test input (text) field.. could not figure out how to set value.
