On probation, depending on the state, probation overrides any rights that one may have had previously. The probation departments have total authority over those in there charge and can violate for any cause. do you have a terms and conditions of probation sheet that should have been given to you by the judge at the time of sentencing? this will give you all the conditions of your probation. The courts may not levee additional charges but may violate you for breech of conditions. this can be done with one recommendation from your PO or your PO's supervisor. Be careful cause on probation they will watch you pee for a test so there wont be any cover-ups or synthetics. good luck.