Variable-length tables are specified using the OCCURS DEPENDING ON clause.
The value of integer-1 must be greater than or equal to zero; it must also be less than the value of integer-2.
If integer-1 is omitted, a value of 1 is assumed and the keyword TO must also be omitted.
integer-2 must be greater than integer-1.
The length of the subject item is fixed. Only the number of repetitions of the subject item is variable.