gpml_auto_convert_custom_fields

Description

Filter which custom fields GP Media Library will attempt to convert to use image IDs.

Apply to all forms.

add_filter( 'gpml_auto_convert_custom_fields', 'my_custom_function' );

Apply to a specific form.

add_filter( 'gpml_auto_convert_custom_fields_FORMID', 'my_custom_function' );

auto_custom_fields array
A list of custom field keys that should use image IDs.
post_id int
ID of the post for which custom fields are being processed.
entry array
The current entry ID.
form array
The current form.
feed array
The current Advanced Post Creation feed.

This filter is available since GF Media Library 1.2.8.