Controller and data change parameter in the form

[MadSmol Qwert]

Hi Pascal! I have a question. There is a form with several input fields. For example, the content of one input field has been changed. How can I pass the status that is responsible for changing the data in the form to the controller? Specifically, how can I pass the status of changing the data in the form to the store action?

<form name="mainfrm" class="w3-container w3-theme-light" data-zdk-load="contactctrl:detail" data-zdk-submit="contactctrl:store"> Thanks!