[TYPO3-english] submit button not working in a form in typo3

[RAKIBI Anass]

I am facing a critical issue, I have to edit an extension created by someone else, A view in Backend of that extension is using the same tab system used by typo3.(see picture).

so , the redirection is generated somehow using javascript. I was asked to add a search form inside "overview" tab, so I added the fluid code for it like so :

<f:form method="post" controller="File" action="search" id="search_form">


but when I hit the submit button , the concerned action is never called ... It's been more than 4 hours trying succesless to figure out a solution .

Could you please help me ?
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