Component help

Hi I am making a contact form using flash mx.
There are various inputs e.g. name, email etc
I give each input box a var name that the php script can read so for example if the var name of the email input is called “inputEmal” i can refer to it in the PHP script by writing - Email: $inputEmail
I can do all this fine on my own and it works great.

However I want to use a flash ui component namely the combo box. But I do not know how to refer to it in the php script as I dont know how to give the comboBox a var name. I cab give it an instance name but this does not work as the php script wont process it.

Does any one know what I should do.

Thanks.