Filter on empty date

Filter on empty date

Hi folks,

I'm working with a custom request view in the latest version of Servicedesk Plus MSP and I'm trying to set the filter criteria to filter on an empty Responded Date.  It seems though that i can only filter on a specific date not the lack of  a date.  There doesn't appear to be any way to say "show me requests where the responded date has NOT been set".   Any help would be appreciated!

Thanks,

Serge