[flexcoders] Embedding Image from dynamic string

[Sajid Hussain]

Hey Dudes

    var a:String="sources/top2Over.jpg";
       [Bindable]
        [Embed(source=a)] or 
        public var top2Over:Class;

I want to create object embed adders to be fetched by string .liek the given 
simple wrong code 

Sajid