Creating the Rule

You need to create a rule called calculate long distance rate that evaluates the ratestable .

1. In the Project Explorer view, expand the ratecalculation node and the Rules Modeling node and in the context menu of the ratecalcrules node, choose New Rule .

2. In the dialog box that appears, enter calculate long distance rate in the field and choose OK .

3. In the rule editor that appears, under the If section, choose the Add icon.

   The default condition: Operation.isSuccessful Equals true appears.

4. Edit the default condition as follows:

   1. Choose the LHS value: Operation.isSuccessful and in the drop down menu choose CallCharges/Charges/Connection Provider

   2. Choose the comparator: Equals and in the drop down menu choose Not Equals .

   3. Choose the RHS value: Default Value and in the inline text box enter null .

5. Under the Then section, choose the icon that looks like a plus sign and in the drop down menu that appears expand the Evaluate Decision Table node and choose ratestable

6. Save the changes.