Access ComboBox value returns index

I have a ComboBox with the following RowSource. When I get its value ArmTypeCombo.Value
it shows an integer which is the index in the list rather than the text value of the column ArmType.
How can I correct this to rather show the text value?  

SELECT t_ArmType.ArmType
FROM t_ArmType
ORDER BY t_ArmType.[ArmType];