Hi Sergey,
I have a function that unencrypts the value stored in a field in a table. The function is used universally throughout the app and to do so, I need to pass it the field name so it knows which field's value to decrypt/encrypt. So I want to be able to store the fieldname in a variable and pass the value in the variable to it using the variable throughout the app.

I got it working though using EVALUATE(). I always forget about the EVAL() function!

>I guess I'm missing something but I still don't see why you would need macro substitution.
>
>>Hi Sergey,
>>I know that in THAT case I do not need macro substitution, but I used that just as an example. In reality, the value in getfield will change to a different field name and the wordhide program will pull the value from the correct field in the table depending on the fieldname that is passed to it. So I need to use macro substitution so I can use one variable name: getfield throughout a procedure and only change the field name ONCE and store it in the variable getfield.
>>
>>

>>getfield='prof_sc'
>>value1 = WORDHIDE(&getfield)
>>?value1
>>
>>*wordhide function xstr param should = 'prof_sc' in this example only
>>FUNCTION wordhide
>>PARAMETERS xstr
>>set step on
>>? xstr
>>IF LOWER(xstr)='prof_sc'
>>	RETURN 'mdr_dob'
>>ELSE
>>	RETURN 'unknown - prof_sc was not passed to this program'
>>ENDIF
>>