Hi @hube2 ,
Thanks for the help!
$selection_key returns an auto-generated key value. (i.e. ‘key_01’).
(If anyone is interested I just used this plugin https://github.com/andersthorborg/ACF-auto-generated-value)
I obtain this ‘$selection_key’ from a dynamically populated select field which gather data from a repeater field row.
So the $selection_key correspond to the selected choice.
I would like to use this unique key value to retrieve ALL data from the repeater field row.
Hope this make sense!