>Thank you, Naomi,
>
>The binding needs to go both ways. That is, it must allow editing, and the formula to translate in one direction is different than the other :(
>
>Is it possible to tell VFP (perhaps at runtime) that the controlsource of the grid column is in fact this.textbox.value or something similar? In other words that the controlsource of the grid column is the property of another object?
>
>Thanks,
>
>Alex

You may try to use form's method as a controlsource. I believe the topic of how to make this field updatable was discussed on a Russian web site. I may try to search at night there for a solution.