VFP 6.0
SP 5
Windows 98

Anyone can help me?

How can I calculate a column in Grid poblated by free fields.
My coding is like this:

If x
LnMyVariable = 1
Else
LnMyVariable = 2
Endif

select DETAILS
Thisform.GridLiquidac.RecordSource = 'DETAILS’
Thisform.GridLiquidac.Liquid.ControlSource='DETAILS.Field1'
Thisform.GridLiquidac.Item.ControlSource ='DETAILS.Field2' Thisform.GridLiquidac.Weight.ControlSource='DETAILS.Field3'
Thisform.GridLiquidac.Libras.ControlSource='DETAILS.Field3' * LnMyVariable'
Thisform.GridLiquidac.refresh()

* But can´t obtaind the desired results, and receive the error message: Data type Mismatch (or error number 1742) when I define like this:

'DETAILS.Field3' * LnMyVariable

And see nothing when I define the line as follow:
Thisform.GridLiquidac.Libras.TxtLibras.value ='DETAILS.Field3' * LnMyVariable'

Property Status in Grid:
Bound = .f.
Sparse = .f.

What is wrong here?..What am I doing bad.?.
Any better idea?

Thanks
Carlos Burgos