Reply To: Update_field for user field

• John Huebner

• January 13, 2022 at 9:29 am

I think you have the value and post ID arguments backwards

https://www.advancedcustomfields.com/resources/update_sub_field/

This is what you have

update_sub_field(
  array('related_player', 1, 'reservation_participant'), // selector
  'user_3', // value
  204); // post ID