How do I get all CIFS sesssions with a certain idle time?

Hello, everyone,
I want to see all CIFS sessions whose idle time is higher/lower/equal to a certain duration.  Unfortunately I can't get the correct value after "-idle-time".
It always looks like this:
FAS80402::> vserver cifs session show -idle-time >0
Error: "0" is an invalid value for field "-idle-time <elapsed>"

FAS80402::> vserver cifs session show -idle-time 0
Error: "0" is an invalid value for field "-idle-time <elapsed>"

FAS80402::> vserver cifs session show -idle-time >3s
Error: "3s" is an invalid value for field "-idle-time <elapsed>"

Does anyone know how to set the value?

Thank you very much.
Best regards

Michael