Gunnar,

You've to enclose property value in the string delimiters so it isn't evaluated when you assign it.

This.Column3.DynamicBackColor = ;
  [iif(InList(ResultDisplay.played_1, ResultDisplay.history_1, ResultDisplay.history_2,] + ;
    [ResultDisplay.history_3, ResultDisplay.history_4, ResultDisplay.history_5,] + ;
    [ResultDisplay.history_6), rgb(192, 192, 192), rgb(255, 255, 255))]

<
>ok - it must be sunday or something...
>
>if have a grid and in the init() i put this code:
>
<snip>