Ohio Revised Code Title XXIX. Crimes Procedure § 2941.30

The court may at any time before, during, or after a trial amend the indictment, information, or bill of particulars, in respect to any defect, imperfection, or omission in form or substance, or of any variance with the evidence, provided no change is made in the name or identity of the crime charged. If any amendment is made to the substance of the indictment or information or to cure a variance between the indictment or information and the proof, the accused is entitled to a discharge of the jury on his motion, if a jury has been impaneled, and to a reasonable continuance of the cause, unless it clearly appears from the whole proceedings that he has not been misled or prejudiced by the defect or variance in respect to which the amendment is made, or that his rights will be fully protected by proceeding with the trial, or by a postponement thereof to a later day with the same or another jury. In case a jury is discharged from further consideration of a case under this section, the accused was not in jeopardy. No action of the court in refusing a continuance or postponement under this section is reviewable except after motion to and refusal by the trial court to grant a new trial therefor, and no appeal based upon such action of the court shall be sustained, nor reversal had, unless from consideration of the whole proceedings, the reviewing court finds that the accused was prejudiced in his defense or that a failure of justice resulted.