Symantec WISESCRIPT PACKAGE EDITOR 8.0 - REFERENCE FOR WISE PACKAGE STUDIO V1.0 Reference page 200

WiseScript Actions
Expression True means the expression in the Value field below is evaluated
according to the rules outlined in Variables and Expressions on page 110. The
variable is ignored and can be left blank. The result is considered true if it
evaluates to a non-zero result.
(The password comparisons are applicable in WiseScript Package Editor only.)
WiseScript Package Editor Reference 200