form_dropdown and set_select

[eluser]bhbutter123[/eluser]
I am not getting the result I want out of set_select when using form_dropdown. I know how to use both but the set_select is not working. The second setting in the set_select function is for the value of the option but if you are supplying the form_dropdown an array to build a list of options I cannot think of how to set the second setting of the set_select function. Would someone please show me working code so that I can see how it is done.