Wagner appealed alleging that Judge Bower erroneously instructed the jury by giving the charge: "the refusal itself may be considered as positive evidence, creating an inference that the test would show the presence of alcohol or other prohibited substances which impair his driving..." The Court of Appeals found the that phrase "...which impair his driving" had been disapproved in Baird v. State, 260 GA. App. 661 (2003). The incorrect jury instruction invaded the province of the jury and shifted the burden of proof on the defendant to rebut the inference. The State did not argue the charge was correct but simply that Wagner had waived his objection by not objecting specifically after the trial court had given the charge. Because the incorrect charge shifted the burden, it was plain error and not waived by the failure to specifically object to it at the trial court. The Court of Appeals held that generalized instructions concerning the burden of proof are insufficient to over the mandatory nature of this specific instruction. Duelmer v. State, 265 Ga. App. 342 (2004). Because this was a substantial error the conviction was reversed.