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How i can access current cell's item from page header metatags?

i would like to give the user the ability to share something from repeating group… this item contains image title and etc…
i would like to give the open grapth some info of this item when someone wants to share…
the problem is when i am trying to access this current cell item from the current page header in order to initialize the og meta tags title image…
how i can access this current item entities ?
thank you

Have a “share button” in the RG.

Share button first populates a User field wit the title and image, and then show a sharing popup.

So you need to go via either the current user, or the current page thing first.