OPINION

The verdict of guilty is affirmed and the case is remanded for resentencing. At the sentencing, appellant is to receive a sentence which specifies both a minimum and maximum as required by the Act of December 6, 1972, P.L. 1482, No. 334, § 1356(b), added December 30, 1974, P.L. 1052, No. 345, § 1, eff. in 90 days; 18 Pa.C.S. § 1356(b), (Supp. 1977). See, Commonwealth v. Marshall, 254 Pa.Super. 275, 385 A.2d 1017 (1978).