Building Expression

This topic describes the procedure to build expression using a Business Measure for KPI monitoring.

Usually you work with only one Business Measure and therefore, the default expression is readily available for the selected Business Measure. However, when you want to create a composite Business Measure, you need to pick more than one Business Measure. In that case you need to build expressions.

1. In the expression builder, click Measures. The list of already selected measures appears.

   If the KPI is created from Business process model context, then the Business measure which is automatically generated based on the aggregation definition selected will appear.

2. Select and click Operators. The Arithmetic Operators, Delimiters, and Constants list appear.Arithmetic Operators can be used to perform four operations : Addition (+) , Subtraction (-) , Multiplication (*) and Division (div). Delimiters( '(' and ')' ) can be used to split expressions. Constants ( 0-9 ) can be directly used in the expressions.
   
3. Click the required type of operator list and double-click the preferred operator. The selected operator is added to the business measure already selected.
   Note: If you select only one Business Measure, the default expression is filled.
   
4. Double-click the second measure to appear on the pane.
   
5. Use operators, if required, to complete the expression building. For example, if you want to make a composite business measure and want to monitor the Percentage of waiting instances of a process with respect to all started processes, select No. of waiting instances out-of-box business measure and Total no. of instances out-of-box business measure. Using them, build the following expression:
   (No. of waiting instances) / (Total no. of instances) * 100
   
   Note: Click Clear to delete a selected expression.
   

The expression using a Business Measure is built.