When referencing an array, the [N] becomes the subscript that references the array element, and does not designate array dimensions as it did when you defined it. For example, if you defined an array as:

integer Apples[2,2] is 1,15,30,45

and then later specified in your program:

copy Apples[1,2] to Accumulate

ESL will copy 15 to Accumulate.