About dynamic tags feature

Hi,

I am now using the dynamic tags feature from Master Addon and have created some custom field by ACF to build a template page for client’s further update. However I cannot find any of those tags when I tried to add a dynamic tag to the image. There is no “post custom field” option that I can choose the tag of ACF like in title or text editor section.

May I ask if there is any solution to add a custom ACF image dynamic tag?

Thank you very much.