Data Transformation Engine Functions and Expressions Reference Guide

Chapter 1 - Expressions and Evaluations Data Object Names
Functions and Expressions Reference Guide
20
Using the Dollar Sign ($)
The dollar sign can be used to refer to the object to the left of a rule cell.
For example, the component rule below applies to the component RunRule.
The RunRule in the rule can be replaced by $. You can remember it this way—a
dollar sign always means "whatever component appears to the left of the rule".
Here is an example of a Map Designer rule that uses the dollar sign:
Order:Invoice = MapMyOrder ( Order:PO , Index ( $ ) )
In this example, each time this rule is evaluated, the index of the Order:Invoice
being built is the object referred to by the $.