The Chosen documentation mentions parameters for getting the most recently changed variables.

Chosen triggers the standard DOM event whenever a selection is made
(it also sends a selected or deselected parameter that tells you
which option was changed).

So, if you just want the most recent option selected or deselected:

$(.selectId).chosen().change(function(e, params){

 // params.selected and params.deselected will now contain the values of the

 // or deselected elements.

});

Otherwise if you want the whole array to work with you can use:

$(.selectId).chosen().change(function(e, params){

 values = $(.selectId).chosen().val();

 //values is an array containing all the results.

});