How to get Count of Selections from a multi select combo in ext js

[pk.hafeez]

Im getting the raw value of the combo box. splitting by ',' and putting in an array. then taking the length of the array to get the no of selections in the multi select combo. But its not working because ',' exists even in the names of the list in combo for ex:US,alu.xls or US-123,#.xls help me out