IPhone : How to Unhide stepper when we select particular row in tableview

I have created stepper in the CustomCell in TableView.But my requirement is that stepper should visible only when we select particular row.For that i wrote like this

In [cell for row at indexPath] {cell.customStepper.hidden=NO;} ` and in [did select row at indexPath] {cell.customStepper.hidden=YES;}

But still stepper is hiding..Please help me.Thanks in advance.