s:selectManyPicklist's value is required to be String[]?

[Alin Dosoniu]

Hello,   I am interested if the value attribute of a s:selectManyPicklist is required to be a String[].   My managed been is returning a Long[] for value of selectManyPicklist and I can correctly select some values from the available list. But when trying to edit the selected list, reenter on page or try to edit the record, the selected list of selectManyPicklist is empty, all the values are in the available list. I have to mention that if the managed bean is returning String[], then the selectManyPicklist component is working correctly.   And one more question: Is it possible to have the available list on the right and selected list on the left side?   Thank you for your answers, Alin.