[CForm] how to setValue for a field of selection list?

[Christina]

I have a field of selection list: field1, whose data type is integer. I wanted to set its value from the flow like following: row=myrepeater.addRow() row.lookupWidget("field1").setValue(2); but it doesn't work, all the other simple fields works though.  would any one please tell me how to set the value of a selection list? Thanks!