Prevent "Request was opened" notification to trigger for a particular catalog item.

[Ken61]

My requirement is to prevent "Request was opened" notification to trigger for a particular catalog item.

I have a variable on the catalog item called add user. If user select "remove" from add user variable, the notification should not triggered.  Below is the code I use. The issue is that the notification are not triggered again for all other catalog item again but only trigger for the one reference on the script.

answer = checkResult();
function checkResult() {
    var gr = new GlideRecord('sc_req_item');
    gr.addEncodedQuery('request=' + current.sys_id + '^cat_item=f8d13ba7c071f950fa34f24c403a30ce'); //sys id of VIP user update catalog item
    gr.query();
    if (gr.next())
	if(gr.variables.add_user == "remove"){
        return false;}
    else
        return true;
}