generate trigger from business rule

function onAfter(current, previous) {
  // Create trigger to set HR Case to Work in Progress
  // when On Hold review date passes
  try {
    // Search for any pre-existing triggers
    var trigger = new GlideRecord("sys_trigger");
    trigger.addQuery("document_key", current.sys_id);
    trigger.addQuery('name', 'STARTSWITH', 'HR Case OnHold Review - ');
    trigger.query();
    while (trigger.next()) {
      // Remove trigger(s) for this document
      trigger.deleteRecord();
    }
   
    // Set review date and set time to start of day
    var requestDate = new GlideDateTime(current.u_review_date);
    var datestr = requestDate.getLocalDate().toString();
    if (requestDate.isDST()) {
      requestDate.setInitialValue( datestr + " 09:00:00" );
    } else {
      requestDate.setInitialValue( datestr + " 08:00:00" );
    }

    gs.log('Set On Hold Review Date for ' + current.number + ' to ' + requestDate.getDisplayValue(), '+++ HR Profile');
 
    var newTrigger = new GlideRecord("sys_trigger");
    newTrigger.name = 'HR Case OnHold Review - ' + current.number;
    newTrigger.next_action = requestDate.getValue();
    newTrigger.document = 'hr_case';
    newTrigger.document_key = current.sys_id;
    newTrigger.script = "gs.log('On Hold Review for " + current.number + " is now due. Setting case to Work in Progress', '+++ HR Profile'); var grCase = new GlideRecord('hr_case'); grCase.get('" + current.sys_id + "'); grCase.setValue('state', '10'); grCase.setValue('assigned_to', ''); grCase.setValue('work_notes', 'On Hold Review for " + current.number + " is now due. Setting case to Ready'); grCase.setValue('u_review_date', null); grCase.update();";
    newTrigger.job_id.setDisplayValue('RunScriptJob');
    newTrigger.trigger_type = 0;
    newTrigger.insert();
   
  } catch (err) {
    gs.logError("BR: HR Case: (FRU) Create OnHold Review Trigger: caught error: " + err, "+++ Fruition Logging");
  }
}