What are typical condo or HOA board term limits?

I live in a condo located in Florida and I have a question about term limits for our board members. An owner was informed by a private attorney, that we can petition two years limits for board members, and have them retroactive if voted on by all 430 owners and won by majority. We had 51 owners sign this petition as stated above and summited the paperwork to the condo manager for a vote. It was reviewed by the condo attorney and was shot down because you can not retroactive board members who are already voted on the board. Is there a law/state statute somewhere that I can refer to in regards to this issue? The condo attorney did not give us any references to support her decision. Our present board has become a dictatorship