Set custom field to true for 4 categories upon save/update

• nessler

• July 5, 2020 at 1:04 am

Hi,
we have implemented a custom field with a true/false setting, however for 4 categories we want it to be set to true (1) upon saving the post. we thought to use the below code but it’s clearly not doing anything. can anyone help us out here ?

function my_acf_update_value( $value, $post_id, $field ) {
    	if ( in_category('306') or in_category('39') or in_category('41')  or in_category('20') )  {
        $value = 1;
    }
    return $value;
}
add_filter('acf/update_value/name=fotos_zichtbaar', 'my_acf_update_value', 10, 3);