How to send variables to php through Combo Box

it’s a simpler one. I have a PHP script already, and a separate button that loadsVariables(etc etc). In my Flash file I have a number of input textfields all with names, and when the button is clicked, whatever the user has entered into the textboxes gets sent as variables to the PHP script. In amongst those input fields I want to put a combo box because in some cases the user needs to select from a list. All I want is to be able to set up the combo box and coding so that whatever is selected in the drop down list gets sent out like the other variables from the textfields. Hope this makes sense. I haven’t used a combo box before and I was hoping there was a simple way to set this up…

can anybody provide me wid sample fla that would be really appreciated…
thanks in advance…