Trying to hide/show text field on ViewCont A, from popover(ViewCont B) with table view

Question

there are some variations of this question out there but none seem to help. I have two View controller.

View Controller (A) has a text field in it. This text field needs to show/hide depending on the indexPath.row that is selected from a tableView that resides in a popover view (B).

Please help.

in my .h file of the vc where the text field resides:

@interface GlobalPageSideDetailViewController : BaseViewController 

<UITextFieldDelegate, UIAlertViewDelegate,UIPopoverControllerDelegate>

@property (strong, nonatomic) IBOutlet UITextField *otherTextField;



in .m of where popover (with table view) resides:

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    NSLog(@"For table View in popover: %ld", (long)indexPath.row);

    if (indexPath.row == 3) {
        //otherTextField.hidden = false;

        //trying to hide/show text field here



    }

}

any help would be appreciated. Thanks!!