q-dialog beforeHide abort

[franfrLor]

I want to abort the hide but it's not working

Here his my code :

function beforehide(event: Event) {
  if (modification.value) {
    $q.dialog({
      message:
        'unsaved change.',
      //cancel: true,
      persistent: true,
      ok: {
        label: 'Leave',
        color: 'negative',
      },
      cancel: {},
    })
      .onOk(() => {
        model.value = false;
      })
      .onCancel(() => {
        model.value = true;
        event.preventDefault();
      });
  } else {
    model.value = false;
  }
}

Dialog close and reopen