NTA and SWQL

Hi!!   I'm trying to pull some information for NetFlow using SWQL and can't seem to get a relative time.

I saw some examples on thwack and have tried to use it to grab some domain info, but am getting the error: The parameter(s) 'Filter, Limit, Rx, Tx, TopKey' are missing for entity Orion.NetFlow.DomainsTop.

The doc I found for relative time is a bit out of date and the filter does not work.

How to fetch Total Ingress & Egress Bytes for Orion.NetFlow.IPAddressGroups using SDK

Any ideas on getting relative time into the Filter for getting information from the Orion.NetFlow.DomainsTop table?

Thanks

Amit