Automating Decisions with Decision trees

2 Tasks

10 mins

Visible to: All users Applies to: Pega Platform '24.2

Beginner

Case Management

English

Scenario

GoGoRoad is expanding its services and providing towing requests to its customers. Customers initiate a towing request and enter their vehicle type and miles to be covered. Configure a Decision tree and Declare Expression so that the towing cost is determined automatically based on the vehicle type and miles entered.

The following table provides the credentials you need to complete the challenge.

Role	User name	Password
Application Developer	author@gogoroad	pega123!

Challenge Walkthrough

Detailed Tasks

1 Configure the Towing cost calculation Decision tree

In the Pega instance for the challenge, enter the following credentials:
1. In the User name field, enter author@gogoroad.
2. In the Password field, enter pega123!.
From the navigation pane of Dev Studio, click App.
Right-click Assistance Request and click Create > Decision > Decision Tree.
In the Label field, enter Towing cost calculation tree.
Click Create and open to create the Decision tree.
Click <click here to add a Condition> to add a Condition.
In the first empty field, enter or select .Miles.
Change the operator value to >.
In the second empty field, enter 20.
Click the return drop-down and select continue. An indented, nested Condition is displayed.

Note: If the Conditions do not display, save and refresh the Decision tree.
Click the nested Condition and repeat steps 6-9 to specify the Condition if .VehicleType = "Sedan" return 80.
With the nested Condition selected, click Add Row twice to add two additional nested Conditions.
Repeat steps 6-9 to define all the following Conditions:

Miles > Vehicle type = Return

if 20 Sedan 80

if 20 Crossover 88

if 20 Truck 96
Select the first top-level Condition and click Add Row two times to add two additional top-level Conditions.

	Miles >	Vehicle type =	Return
if	20	Sedan	80
if	20	Crossover	88
if	20	Truck	96

Repeat steps 6-12 to define the following Conditions:

	Miles >	Vehicle type =	Return
if	10	Sedan	40
if	10	Crossover	44
if	10	Truck	48
if	0	Sedan	20
if	0	Crossover	22
if	0	Truck	24

Decision tree towing cost nested conditions

In the otherwise row, enter the default return value of 0.
Click Save to save the Decision tree.

2 Configure Towing cost Declare Expression

From the navigation pane, right-click AssistanceRequest and click Create > Decision > Declare Expression.
In the Target Property field, enter or select .TowCost.
Click Create and open.
In the Build Expressions section, in the Value of drop-down, select Result of Decision Tree.
In the empty field to the right, enter or select TowingCostCalculationTree.
Click Save.