/sys$common/syshlp/helplib.hlb CC, Messages, DESIGBADIND  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        <Context> , the constant expression "<expression>" in
                an array element designator is not a positive
                integer.

 Description    An array-element designator must be an constant
                expression that yields a positive integer value.

 User Action    Correct the element designator.