I created a alpha numeric field on the screen that is suppose to calculate the time difference between UPDDATTIM and CREDATTIM. In the 4GL i wrote this, but it is throwing an incompatible type: [m]myfield = num$([F]UPDDATIM  - [F]CREDATTIM)

I am assuming its throwing an error because you cant subtract ADATIM variables from the method I am doing. If this is the case, is there a way to get the difference?

Thanks,

Chris