ADOMAKO v APPENTENG     Practice and procedure—Pleadings—Issues for trial—Substitution—Principle in Dam v Addo prescribing substitution of case contrary to pleadings—Whether principle applicable where new case based on pure point of law or binding decided case—Action against trustee for conversion of trust money brought under section 15(1) of NRCD 54—Preliminary objection that action statute-barred by six-year limitation period under section—Trial judge overruling objection on ground that action maintainable under section 15(4) of NRCD 54—None of parties basing case on section 15(4) of NRCD 54—Whether High Court justified in suo motu applying section 15(4) of NRCD 51 to overrule objection—Limitation Decree, 1972 (NRCD 54), s 15(1) and (4).