Input controls array only returning result for one

When i pass an array of input controls e.g. 

 `$inputControls = [
  `          'workOrderNumbers' => [
  `              '177545',
  `              '177548'
  `          ]
  `      ];

only one page of the report returns with one workOrderNumbers records, the report has a group to seperate records based on this record by page.

Is there a reason for this?
