Hi.
i want to add an "event date" for my posts. (i know there are events managers out there, but there are too complicated and not needed cause i only want to show different date instead of the post published date)
I have already thought this through and i see that i can just use custom field inside the post and add there a new custom field, for ex "eventdate" and then give the value to it to show.
I ve also find the php file, content-post.php, and found the specific place that i want to replace which is the following at meta section:
$output .= '<span class="post-date updated">'. get_the_date() .'</span>';
where the function get_the_date() i want to put there the custom field that i create in the post
i ve searched and found that probably is the "get_post_custom_value()" but when i enter it (i ve tried several ways)...
get_post_custom_value('eventdate', $post_id)
get_post_custom_value('eventdate')
get_post_custom_value()
i m getting the result saying only "Aray"
what should i do to present the result i want for ex "3 September 2016"
also just an added question, because this file is in Betheme and i dont want to lose in a future update i will just copy it to the child folder or should i do an addition proceedure for it?
thank you for your help!!

Comments
what you ask for, requires files customization what in reference to Item Support Policy [Links visible only for registered users] is not allowed. So if you want to modify files and don't know how, you should contact with your web developer.
Thanks for understanding!
Thanks for understanding!