If it's not a child support matter you can object. If it's a child support matter, you can't object because the GM has jurisdiction to hear it. You should not say you are objecting because the GM doesn't like you.
The contents of this answer should be considered friendly advice, not legal advice and the answer should not be construed to constitute an attorney-client relationship. If you'd like actual legal advice, call me at 954-567-4100. Also, if you liked this answer did, be sure to click the thumbs-up button
You do not have to provide a reason for your objection. There is a form on the Florida Supreme Court website for an Objection to Order of Referral to GM that should give you more guidance.