Put a stored procedure or query in a datawindows that contains an editmask

I was trying for days when I saw that it did not work out, I chose to comment on what they told me to solve.
Well, I have a datawindows where it shows a query, it is precisely in this query where obviously I have columns are these of type dropdownlist and editmask then I already have the stored procedure to calculate the years, months and days of the workers but what I lack is that as place it in this editmask. I am an intermediate level user I would say. I would appreciate if you can advise me either remotely etc or here since I have been trying for weeks and I can not find the solution. Thanks