In Burns v. State, 699 So.2d 646, 653-54 (Fla. 1997), this Court ruled that a defendant's challenge to victim impact testimony on the basis that it was unduly prejudicial was procedurally barred because the defendant did not raise this specific objection at trial. Moreover, in Norton v. State, 709 So.2d 87, 94 (Fla. 1997), this Court determined that a defendant's motion for a mistrial at the conclusion of a witness's testimony was insufficient to preserve the witness's impermissible comment for appellate review. 709 So.2d at 94.