java model loader doesn't work

Hi,
i create an java external with an jit.gl.model inside.
in the main i create the model and later i send the read message to the object but nothing happens.
public void readA(String A){
    Schaedel.setAttr("read", A);
    post("geladen "+ A);
}
the post gives me the complete file path. and no failure is posted in the max window so should i use the send command?
Schaedel.send("read",A);

thanks