I solve this. Except one problem. Now i’m using next code for form
<?php acf_form(array( 'post_id' => 'nova_narocilnica', 'field_groups' => array( 'group_5f475552ca375' ), 'post_title' => true,
and working well and then with pre_save filter i add manualy this acf filed to database (i cerate new term to custom taxonomy). But problem is when i refresh this page where i have this form included i get in inputs the latest saved values. But i save this values for custom taxonomy not to this page, so why then i get latest saved input values.
When i go researching i find that if i change
'post_id' => 'nova_narocilnica', change to something else the input are blank but still when i submit form it also save to this page. why?
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