Multiple eyes, only one set of pupils will work at a time.

Ok i was finally able to use the eye gaze behaviour correctly, i had to eliminate the global one to add multiple ones, i'm now able to move multiple set of pupils etc.

Now the problem has to do with the file size, 1080p is too much for what i have to do, the avatar will occupy a small space in a 720p background, how can i resize the psd without destroying the rigging ?

if you look in behaviors, there is an eye gaze behavior. It understands multiple views (there is a section called views in the tags panel - lists frontal, left profile, etc). You can look in the properties panel and expand the behavior and see the views it found. The handles section shows the layer it binds to. Basically however it can bind to one layer in a view only (apparently). So the most common approach is either to reorganize the hierarchy so the different expressions live under the Left Eye and Right Eye etc so there is only one tagged layer and you flip the contents using triggers; or you need to add another behavior and put it in the hierarchy somewhere so it finds the other eyes. I suggest the first as less confusing to me, but it depends on what you are trying to achieve.

To expand, have one Left Eye layer, one Left Pupil etc. Then inside have 'happy pupil' / 'sad pupil' selected using a trigger. The same trigger can control multiple layers, so it's still one trigger, but it is bound to the happy layer inside both the left eye and right eye.

Does that make sense?