InstanceName returning null when used in a Parameter within a UDT - 8.0.10

I have been using parameter within a UDT titled parentName

with the value of {InstanceName}

This has always worked int the past. Now it is telling me that it is resulting in null

This is on 8.0.10

I upgraded from 8.0.9 without changing anything and am getting errors on 8.0.10