Hi @aisforadam
If you’re able to save the value, I believe you can get the value in the “acf/fields/relationship/query” hook like this:
$args['meta_query'] = array(
array(
'key' => 'custom_acf_field',
'value' => get_field("custom_field_name", "option"),
'compare' => 'LIKE'
)
);
You can also save it as the current post/page custom field by providing the ID instead of “option” for the update_field() and get_field() functions.
I hope this helps.
