Thanks for the reply.

Me neither, it’s very confusing. And google mce_src gives 0 results.

Yes, it’s only the url to the iframe.

These are the ACF conditions for the iFrame field:

array(
‘key’ => ‘field_5a82e9a68111e’,
‘label’ => ‘Iframe Demo Game’,
‘name’ => ‘iframe_demo_game’,
‘type’ => ‘textarea’,
‘instructions’ => ”,
‘required’ => 0,
‘conditional_logic’ => 0,
‘wrapper’ => array(
‘width’ => ”,
‘class’ => ”,
‘id’ => ”,
),
‘default_value’ => ”,
‘placeholder’ => ”,
‘maxlength’ => ”,
‘rows’ => ”,
‘new_lines’ => ”,
),

Hmm, but the html-mark up is added to the amp-template:

<amp-iframe width=”400″ height=”225″
sandbox=”allow-scripts allow-same-origin”
layout=”responsive” src=”<?php the_field(‘iframe_demo_game’); ?>”>
<amp-img placeholder layout=”fill”
src=”https://ampproject-b5f4c.firebaseapp.com/examples/images/kittens-biting.jpg”></amp-img>
</amp-iframe>

For the iframe_demo_game field, I only add the following: https://caocw.playngonetwork.com/casino/PlayMobile?pid=2&gid=bookofdeadmobile&lang=en_GB&practice=1

That shouldn’t be tagged as an iframe – or I’m I missing something? 🙂