I was trying to add this function

            function checkAll(bx) {
    var cbs = document.querySelectorAll('[value="OPT_THUMB"], [value="OPT_THUMB_STRIP"]');
    for(var i=0; i < cbs.length; i++) {
    if(cbs[i].type == 'checkbox') {
      cbs[i].checked = bx.checked;
            }
        }
    }

But the developer built his code on the checked . block => this is 👉ban code👈

What do I do to escape the ban while the escape is limited to that function only