>>Unless you are talking about a lot of data, you can have more fields, one of each type you need, and store the name of the field holing the data in the data field.
>
>Thanks, I thought about this. But I'm talking about much data)))
>Maybe I'll use this solution but I don't want to have only one field used and others wasted.
>Still thinking about direct access to VFP internal variant structure. But this seems not possible.

It's possible using Library Constraction Kit and C++.