>It is error 12 - variable not found. It doesn't happen when the form loads, but if you 'call' it from the child grid it pops up.
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>

This.HighlightForeColor = EVALUATE(This.Columns[1].DynamicForeColor)

>
>I have tried (from grid2)

thisform.grid1.HighlightForeColor = EVALUATE(Thisform.grid1.Columns[1].DynamicForeColor)

, but that gives the same error..

When you want something to happen at one place when something happens another place, normally BindEvent() is the easiest and best solution.