[oPanel beginSheetModalForWindow:[self window]

� � � � completionHandler:^(NSInteger result) {

� � � � if (result == NSFileHandlingPanelOKButton) {

� � � � � � for (NSURL *fileURL in [oPanel URLs]) {

� � � � � � � � // do something with fileURL

� � � � � � }

� � � � }

� � }];

the second arg is a handler..

thank you

--
Pavlos Vinieratos