first view controller
    .h
    @property(nonatomic) NSString *tag;
    .m
     NSLog(@"tag %@",tag);

        if([tag isEqual:@"Meaning"])
        {
         textView.text = @"abcd";
        }
        else
        {
         textView.text=@"efg";
    }


    second view controller
    .h

    @property (nonatomic,retain) firstviewcontroller *centerVie

    .m

     self.sidePanelController.centerPanel = [[firstviewcontroller alloc] init];
     centerView.tag=@"Meaning";