uiscrollbar name through textfield

Question

I am adding a TextField and a uiscrollbar that goes with it dynamically. And since the end user can add / remove text, and re-size the textfield I want the scrollbar to update. So how do I keep track of scrollbars?

For example, it would be really useful if I can just click on a textfield and it will tell me what scrollbar it is linked to.

Thank you very much in advanced and have a great day.