My guess is you will need a different set of eyes with a different eye gaze behavior. You could try putting a hidden pupil range layer in and try a swapset to see if it picks up on the current swaps4t layer, but i am going to guess that won't work. The eye gaze behavior shows the layers it binds to in advance, so i suspect it won't change at run time. Hence have a separate set of eyes with eye gaze behavior with different pupil range layer to fix it.