>Nobody suggested it, but it works! Without the m. it still gives 0, but with the m,. it gives a 1.
>
>

It means that you ran into the field precedence over variables!!!!!! In your case you have lx and ly field names in the currently opened table.


>>Not sure if somebody already suggested this, because I didn't follow the whole thread.
>>But is there any change if you use [m.]?
>>

>>lx = "Zip Code"
>>ly = "Zip"
>>? at(m.ly,m.lx) 
>>