So, thanks to Brandon Saxe over at vmware, i now know how to assign the IpamSearchComparisonType. It looks like this: IpamSearchComparisonType.EQUAL Real simple. Putting this out here for someone else who may run across the same issue.
Did you ever figure this out? I am facing the same issue right now, and according to VMWare tech support, this isn't supported out of the box. I think i have a working solution if you still need it. Just let me know.