Get multiple selection values

Hi there!

I'm using a multiple selection grid and here is my action handle:

// action handler
var saveValue = function(){
var array = this.getSelectionProperty("values");
var codes = this.getDataProperty("text", array, 2);
}

It obviously doesn't work because "array" has values like "1,2,3".

My question is: does anyone know how to get all the values of the selected rows for a given column?

Cheers