Need to remove multiple inactive users from groups

[anatara]

Hi All,

I have a requirement to remove inactive users who are all more than 15 days from today from the group member table by using scheduled job. I have written a script for this. But whenever I execute it, It removes only few inactive users from groups..Assume I have 700 Inactive Grp members, first time - 692, second time - 678..Like that, It is working...But I want it in a single shot. Below is My script., Do we have any functionality ? Because I cannot modify the 'slice' each time.

Please post your suggestions.

Thanks In Advance

gs.log("********Removing Inactive Users from Groups********");

var nowdate = gs.now();

var gr=new GlideRecord("sys_user");

gr.addQuery('active', false);

gr.query();

gs.log('RemovingInactive users: ' + gr.getRowCount());

while(gr.next()){

      var result = gs.dateDiff(nowdate, gr.u_term_date, false);

      var res = result.slice(1,4);

              if(res > 15){

              //gs.log('Day :' + res);

              var grmember = new GlideRecord('sys_user_grmember');

              grmember.addQuery('user', gr.sys_id);

              grmember.query();

              while(grmember.next()){

                      grmember.deleteMultiple();

                      grmember.update();

              }

      }

}

[anatara]

I just commented update() and tried but still no luck. I am getting the days format which is shown in the above image. So I have used Slice(1,4) to neglect '-' from the format.