Yes. You need to have his written consent to remove the children from the State. If he is not willing to consent, then you need to file a Notice of Intent to Relocate along with the Petition for Dissolution and get the court's permission to move. The court will determine if the move is in the best interest of the children.
My office offers free initial telephone consultations if you would like to discuss this matter further, as well as your potential rights and options. If you would like to schedule a consultation, please contact my office.