You'll have to define a column class in code, that you'll then add to your grid programmatically after you instantiate it. You can define your column class just by storing this code in a PRG:

define class MyColumn as Column
    * Define whatever properties or methods you want here
    * Properties can be changed at runtime
enddefine

In the Init of your grid you can use:

 This.Newobject('Column1','MyColumn','MyClassPrg')

>Hi,
>
>I have a grid class (with o columns), that i usually use to accept cursors (that's why i have the ColumnCount = 0). Since i have no columsn i cannot create properties to handle a FILLED up line, to "play" with DYNAMICBACKCOLOR.
>Any idea?
>
>Thanks,
>
>Ricardo