i try to add my custom button to the form, not to the header of form, but after some fields inside fieldset, i found some example here https://devdocs.magento.com/guides/v2.4/ui_comp_guide/components/ui-button.html like this <form> ... <fieldset> ... <button name="custom_button"> <argument name="data" xsi:type="array"> <item name="config" xsi:type="array"> <item name="buttonClasses" xsi:type="string">custom-button-class</item> <item name="actions" xsi:type="array"> <item name="0" […]