AP Invoice Approval based on requestor supervisor Grade

Summary:

We are trying to create AP approval which will route differently based on requestor supervisor grade. There are couple of other conditions but basically, we are struck with it.

lets say, if requestor supervisor is VP, it should follow approval route else it should follow other way.

for this, i have created first level Requester supervisor approval, next there are two stage parallel to each other, in which we are checking grade, if 'VP' then should follow route 1, if not then follow route2.

What i believe, as invoice supervisor will be either VP or Not a VP, one stage among two will always provide no rules found, and therefor entire approval flow is going to error.