Reply To: Update field not replacing it's content if post date is changed

• John Huebner

• January 8, 2019 at 6:13 am

Try setting your priority higher

add_filter('acf/update_value/name=event_end_date', 'my_acf_update_value', 20, 3);

Also, I’m not sure what format the value needs to be in. A date field does not store a Unix time stamp, so this might be incorrect. get_the_time ('U', $post->ID) + 3628800 You need to figure out the format of the value that ACF is passing your filter and then return the correctly formatted value.
I would do this by temporarily adding

echo $value;die;

at the beginning of the function to figure out what I need to do.