ALV-Grid column width?

Hi

We've developed an ABAP program that uses an ALV-Grid to display some data for some specific months.

In the ALV-Grid we use sum-columns to sum up the values for the different months.

When I try to set a specific width of this column it is simply ignored, and when I show it through WebGui the columns get so narrow that I can't se the column-headers.

Btw we're using R/3 Enterprise 4.7 and ITS 6.20 patch 19 with hotfix.

Does anybody have an idea?

Cheers,

Jacob Vennervald