Snippetfield - Structure field with snippets

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I found my way with this : Auto-sort and auto-filter an structured events list with a Kirby Hook and page model

Final hook with desc sort (‘date’ is my 2nd structure fields)

kirby()->hook('panel.page.update', function($page) {
  if(isset($page->content()->data['my_dates'])) {
	$dates = $page->my_dates()->yaml();
	usort($dates, function($a, $b) {
		if($a['date']==$b['date']) return 0;
		return $a['date'] < $b['date']?1:-1;
	});
    try {
     $page->update(array(
      'my_dates' => yaml::encode($dates)
     ));
     } catch(Exception $e) {
      echo $e->getMessage();
    }
  }
});