Each type of variable requires a unique prefix to reference it.
In most cases the reference is generated for you automatically. For example, if you assign a temporary variable named
JobName directly to an action parameter, the selected variable name is converted to a variable reference string of the form
Variable references can also be used as part of expressions. To increment the value of a Rule Set variable named
UsageCount, the value is the expression
1 + %#UsageCount%. This expression is evaluated at runtime and the result assigned back to UsageCount.