1) Select the field you would like and drag it onto the jspx.
2) Select Single Selection then ADF select one choice
3) Click the add button next to List Data Source
4) Find you web service data control and expand it.
5) Find your "find" service method ie. findGenderLOV --> Return --> result (the one with the white icon not the red)
6) Press ok , Press ok
Follow these simple steps and everything should work in a serviceable manner.