[EpiData-list] How to calculate age

Hello everybody, I am trying to write a syntax in .chk file to automatically calculate age during the data entry from the today's date and the DoB.The syntax is : " ddn MUSTENTER END

age NOENTER BEFORE ENTRY let age=(round(int((date-ddn)/(365.25)))) END END" The variables are coded in the .qes file as follows: {DATE} automatique <Today-dmy>{DDN} DATE DE NAISSANCE (DATE OF BIRTH) <dd/mm/yyyy>{AGE} automatique ### What's wrong with my syntax? Sincerely hope you can help me. Regards, Sophie PilleronPhD student.