I want to write a hardship letter to my ociation to ask to be allowed to rent my condo.?

I have my condo on the market now for 4 months with no luck of selling it. My husband and I were renting it to a friend of ours, but we received a letter from the condo ociation stating that we were not in compliance with the by-laws which state we can't rent the unit. We have a home now and a hefty mortgage, the condo mortgage and ociation fee is $875 per month that we can't afford much longer. We want to ask if we could rent it our again to take some of the financial burden off us until the market picks up again. Can someone provide a sample letter or suggestion? Thanks in advance, Kari