Getting field value into vb6

[xterra]

I am using crystal reports 8 and I need to take some of the values crystal reports is generating and put them into my vb program. They are all formula fields and I have named them in the designer and can see them for example

crystalreport.fieldname.value

my problem is that the value is empty but the crviwer displays a value in it. Does anyone know how to get this value.

Thanks,

Adam