Cannot access iView application paramter

Hi Experts

We are upgrading a system from EP Portal upgrade from 7.0 to 7.4 experiencing a problem a particular WebDynpro application where we cannot access an application parameter defined in an iView. We have a case where we have an application parameter defined for accessing a specific iView through a specific role.

We have defined an application parameter called "type" as follows:

Then we are attempting to access this parameter in the WebDypnro RFC call using:

WDProtocolAdapter.getProtocolAdapter().getRequestObject().getParameter("type")

The issue is that this parameter does not exist in the request object (we have checked this). We have checked that the role has been assigned to the user, but have noticed something potentially curious in that the iView doesn't exist outside the user role (we cannot search for it in the Portal Catalog).

This functionality used to work in the application before the upgrade, so we are wondering if someone could help us identify what potentially has gone wrong?

Thanks in advance,

Alexander Ludwig