Can't set lease with ASD

I've seen the property "provider-VirtualMachine.LeaseDays" documented on various blogs as a way to set the lease if requesting through REST or ASD.  I'm using ASD and calling the RequestCatalogItem through a custom blueprint.  Using the command below "VirtualMachine.LeaseDays" does get set as a custom property for the machine, but it doesn't seem to be enforced correctly.  Whatever the lease is for the base blueprint that's what gets set on the VM.  Anyone found a workaround for this?

inputs.put("provider-VirtualMachine.LeaseDays", new vCACCAFEIntegerLiteral(14).getValue());