Auto Age Calculation

Hi All,

I am using DHIS2 2.27 and one of the data element in our Tracker is assigned as Age.When we enter date of birth,it is able to calculate the client age.But when i run event reports,that age section turns into date of birth.I nolonger see the actual Age of the client like i see when am registering the client.

How do i go about getting the actual age in my reports?