I created a function that will check a condition on a field whose name is passed in. What is the correct syntax to get access to the data in that field?

Below is the code that I am working with:


parameters ls_field
**ls_field is the field name that I need to test against

select employee
IF SEEK(thisform.r_cempcode)
****** this is where I need the help **********
if employee.ls_field = "D"
if empty(thisform.r_days)
messagebox("Appropriate meddage")
endif
else
if empty(thisform.r_hours)
messagebox("Appropriate Meassage")
endif
endif
endif