Using case in an update statement ?

Hi,

I would like to change some rows in a table to two different values depending on the current value.

The value of the column “status” should be changed to ''CLOSED_SUCC'' when its current value is ''OPEN_SUCC'' and it should be ''CLOSED_FAIL'' when the current value is ''OPEN_FAIL''. Of course I could write two statements, but can it be done in one statement ?

I tried to do it with “case” but that failed.

update lr_object_usage set status = (case when status = ''OPEN_SUCC'' then ''CLOSED_SUCC'' when status = ''OPEN_FAIL'' then ''CLOSED_FAIL'');