Branch

Example A university offers discounted fees to students based on a student's age and gender. An expression set contains the calculations to evaluate a students' age and return the discounted fee amount based on the entry conditions configured in the paths in branch element.

Conditions for Branching

paths and entry condition	path priority
Path 1: Female students aged 50 and above are eligible for a 40% discount on fees.	1
Path 2: Female students aged 35 and above, but under 50 are eligible for a 25% discount on fees.	2
Default Path: Students who don't meet the first two conditions are eligible to a 10% discount on fees.	Default

The expression uses these variables in defining calculations and conditions.

Variables in the Expression Set

resource name	resource type
Age	Number
Birthdate	Date
IsFemale	Boolean
UniversityFees	Currency
DiscountedFees	Currency

The first step in the expression set calculates the age of the student from their birthdate, using the AGE function.

The second step in the expression set takes the Age value calculated in the first step, evaluates paths from left to right priority-wise, and returns the discounted fee.

The expression set is simulated with the following test input values for the variables:

• IsFemale: True
• Birthdate: January 1, 1977
• UniversityFees: 50,000

The first step in the expression set returns the student age as 45. This age meets the conditions set in the second path. The expression set enters the second path and returns the discounted fee of 37,500 based on the formula in the second path.