Entering expressions in business rules

In the Rule Condition, expressions appear on the left and right of a condition row.

Expressions can be in one of the following modes:

Mode	Description
Formula	Write an expression using literals, comparison operators, and object properties.
Count	In a list, count the number of items matching a given condition.
Sum	In a list, sum up the expression for every item matching a given condition.
Lookup	Creates an expression that returns a value from a data lookup table.

Select the mode by clicking the down arrow to the immediate right of an expression.