I am using:
Year ( Get ( CurrentDate ) ) - Year ( A1_BirthDate ) - If ( Get ( CurrentDate ) < Date ( Month ( A1_BirthDate ) ; Day ( A1_BirthDate ) ; Year ( Get ( CurrentDate ) ) ); 1 ; 0 )
to calculate the age of a person. It works perfectly. I now discovered that the field needs to be locked to the age of the person at the time of registration. My customers' client may be in a program for several years and my client needs to report on the age of the person at time of entry and time of exit.
Any insight is greatly appreciated.