Repair or replace broken hydraulic hose?

I'm having convertible problems. First off, I broke one of the clear hydraulic hoses. I want to repair it because that might be the easiest and cheapest route. Does any one know how to do this? If I do have to replace the hose, then how do I know which one to purchase? This one website asks to specify if its the upper or lower hose. http://store.convertibleparts.com/5973gmhse.html . Is there a test I can perform to find out which one is upper and which one is lower?