Negation in filter expression

I try to apply a row-filter on a gridGroupingControl. e.g. a filter for name of persons. to show all rows where column "name" has the value ''Klaus'' I use following expression: [name] LIKE ''Klaus'' and that works fine ;-) but now I want to show all rows where "name" has a different value from ''Klaus''. But i can''t find how to use a NOT in the expression. Following does not work: NOT ([name] LIKE ''Klaus'') Also in the documentation "NOT" is not listed as operator in filter expressions. Can anyone give me a hint how to negate the expression of RecordFilterDescriptor? Thx, Klaus

OK - I found it by myself ;-) "([name] LIKE ''Klaus'') = 0" works fine! Klaus