[[File:CrossLinked_Demo016.png]]
== Worked Example - Child Rules ==
It is possible to apply rules to the children records to perform mathematical calculations within the report. The following example adds a rule to count the number of contacts each parent has.
[[CrossLinked_Calculation_Fields]] gives examples of how this field is used.
In our example we add "count#strCDA_616_field_1_2#child;" to the "Child Calculation Fields"
[[File:CrossLinked_Demo017.png]]
[[File:CrossLinked_Demo018.png]]