Are you trying to use the constant in another event/method? You need to have an #INCLUDE in each of them. If it's to be used in all projects, define it as a default include file under Tools/Options/File Locations (in VFP6 only).

>Can someone tell me how can I use .h files to define constants.
>
>I made the following h file:
>
>*invoice.h
>#DEFINE DOCUMENT_FEE 90
>#DEFINE SEAL_FEE 3
>#DEFINE VALIDATION_FEE 20
>
>And I try to include it using:
>
>#INCLUDE [..\invoice.h]
>
>in the load event.
>
>But when I call for the constant it isn't there.
>
>
>What am I doing wrong?