We affirm the judgment of the trial court; However, we remand the case with directions that the trial court amend the sentence, awarding appellant credit for the time he spent in a state hospital as a mentally disordered sex offender. Section 917.218, Florida Statutes (1977); Hall v. State, 358 So.2d 891 (Fla.2d DCA 1978). Appellant need not be present for this purpose.