Casting to a string fails on indexed array expressions

[PaulSnow]

Error:
Decision Table: Syntax_Examples
Filename: SyntaxExampleDTs.xls

Source: set programLevel = (string) errorCodes [0]
Error: java.lang.Exception: Error found at Line:Char =0:35 java.lang.Exception: Can't recover from previous error(s)
Info: Old Postfix: None in XML
3 ACTION action
134 SET set
130 RSTRING programLevel
13 ASSIGN =
83 LPAREN (
137 STRING string
129 RPAREN )
113 RARRAY errorCodes

Total Errors Found: 1