Accessing from flash User Interface to a custom component instance parameters on stag

[FONT=Times New Roman][SIZE=3]Hi I have developed a component in Flash AS3 and this are on the stage. I want to pass a xml from Custom UI (component Inspector) to the component . The problem is I don’t know how I can set the parameters. Before in AS2 we hade a instance name xch and in As3 don’t exist. [/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3]The method name I want call from the Custom UI in flash is[/SIZE][/FONT]

 
public function set saveGuiXml(xml : XML) : void {
 
            this.xml = xml;            
}

[FONT=Times New Roman][SIZE=3]Thanks for all help![/SIZE][/FONT]