The base priorities of processes inspector is extremely annoying to use to just get the string representation or integer representation of the base priority of a process. It would require a very complicated set of IF/THEN/ELSE statements to get this info, even though it should be available from the inspector directly if cast as a string, or using a property of the type “priority class”.
Q:
base priorities of processes
A:
Error: Expression evaluates to an unrepresentable object of type "priority class".
https://support.bigfix.com/inspectors/Task%20Objects_Any.html#priority%20class