Need help with iphone app

I made an iphone app that shows a tableview with NSTimers on the cells. When a cell is touched, the timer starts, when the cell gets touched again the timer invalidates. Everything works until I try to run more then one cell/timer at a time. The method the timer calls starts recording all of the timer tics under the last cell that was touched, rather then both cells that should be running at the same time. ## Deliverables [login to view URL] requirements notice: As originally posted, this bid request does not have complete details. Should a dispute arise and this project go into arbitration "as is", the contract's vagueness might cause it to be interpreted against you, even though you were acting in good-faith. So for your protection, if you are interested in this project, please work-out and document the requirements onsite.