gadgets.rpc.call callback is not getting called on call return

[balachandra maddina <ch...@gmail.com>]

Hi There,

 Im building some sample gadgets using GWT and Apache Shindig, i have
a problem calling the handler of a gadget from a another gadget, when
i first loaded Gadget-1 i registered a handler and when a second
Gadget-2 is loaded im making a gadgets.rpc.call to call the other
gadget and passing a call back function to be invoked once the call is
returned. but here the handler of the Gadget-1 is getting called fine
but the callback function i defined in Gadget-2 is not getting called.
below is the code im using

  public static native void getData() /*-{
                                          function callback(){
                                             alert("this is
callback");
                                          }

$wnd.parent.window.gadgets.rpc.call('',"remote_alert", callback);
                                          }-*/;

}

could some one tell me why the callback is not being called please.
your help is appreciated.

Thank you,
bala.