Defining an initially empty array is useful when you do not know the maximum array size the sequence requires during execution and when you want to save memory during the periods of execution when the sequence does not use the array. Enable the Empty option in the Array Bounds dialog box when you want the array to be initially empty. When you enable this option, the Upper Bounds control for each dimension dims.

You must use the TestStand API to both resize and insert elements into empty arrays.