Opening a search based on new results

On a checkbox to review duplicate IDs, when you check it, it opens a new window for a specific search. There aren't any filters on the search, just specific results on Customers. I'm trying to, in a script add a filter, and open a window with the new search results. I've gotten everything to work except for the search results are wrong. At first I thought it was the IDs not being correctly formatted for the filter... then I tried delaying the window, just in case the search didn't save in time. Has anyone tried to do this before?

 if(duplicateCheckbox){                  var dupeIds = record.getValue({                      fieldId: 'custevent75'                  }).split(',');                    var dupeSearch = search.load({                      id: 'customsearch3968'                  });                  dupeSearch.filters.push(search.createFilter({                        name: 'internalid',                        operator: 'anyof',                        values: dupeIds                      }));                  dupeSearch.save();                                    setTimeout(window.open("