Send library symbol to nested class?

i have a fla document with a symbol in the library (which i set Linkage ID).
i have also two classes : for example parent and child that parent class in a loop places some child copy on the stage.

how could i send my symbol in the library to the child class (from parent class) properly?

//in fla document
var myParent:parent = new parent(mysymbol);
//create 7 child

i need to have NEW symbol copy in for each child instance.