Empty String value in FilterBuilder

Hi All,

Is it possible to set a criteria like status='' (empty string)? I am missing a "empty" selection. "Is null" doesnt work because the column isnt null. How can I do this? Because my status field is a selectItem I have a dropdown list but even I select here the empty value it doesnt fetch the right records.

If I do a sql statement like select ..... where status='' it fetches the correct rows. Is there a bug in FilterBuilder or any trick to do it?

Thx a lot