`tap run` with external parameter does not work with resources

Trying to set a power analyzer from an external parameter does not seem to work:

Set up two PSUs one named PSU0 and one PSU1 (must be added as the second PSU).

tap run exttest.TapPlan --e pa=PSU1 --verbose

When this is done, PSU1 should be selected, but in reality it is actually PSU0 that is being used(bug).