[flexcoders] MenuBar menuItem - dynamically change selected item

[sleblang]

I have the following menubar implemented:

                 <mx:MenuBar id="adminBar" labelField="@label"
itemClick="changeMenuView(event)"change="adminBarSelection(event)">
                        <mx:XMLList>
                            <menuitem label="Options" data="top">
                                    <menuitem label="Main"
data="MainView" type="radio" group="group1" />
                                 <menuitem label="Account Management"
data="AddUser" type="radio" group="group1" />
                                 <menuitem label="Log Out" data="LogOut"
type="radio" group="group1" />
                            </menuitem>
                        </mx:XMLList>
                 </mx:MenuBar>
How can I dynamically change which menuitem is selected without actually
clicking on it?

Thanks for any and all replies.