Order unanimously affirmed, without costs, and judgment entered declaring section 305 Real Prop. Tax of the Real Property Tax Law constitutional. Memorandum: Plaintiffs own real property in the Town of Pompey (Town) and seek a declaratory judgment that the method of fractional assessment required by section 305 Real Prop. Tax of the Real Property Tax Law is unconstitutional. Subdivision 2 of section 305 provides that all real property shall be assessed "at a uniform percentage of value". We agree that plaintiffs' cross motion for summary judgment was properly denied. However, we find that the complaint does plead a justiciable controversy and in reaching the merits, hold that section 305 Real Prop. Tax of the Real Property Tax Law is constitutional. Although at the time this action was commenced, the Town had not yet assessed petitioners' property pursuant to section 305, "[t]he fact that the court may be required to determine the rights of the parties upon the happening of a future event does not mean that the declaratory judgment will be merely advisory. In the typical case where the future event is an act contemplated by one of the parties, it is assumed that the parties will act in accordance with the law and thus the court's determination will have the immediate and practical effect of influencing their conduct". ( New York Public Interest Research Group v Carey, 42 N.Y.2d 527, 530-531.) A determination of the legality of section 305 will have the immediate and practical effect of influencing the actions of the defendant town board of assessors in choosing the proper standard for assessing plaintiffs' property as well as other property within the Town. Section 305 is not unconstitutionally vague because "value" means market value (see Matter of Hellerstein v Assessor of Town of Islip, 37 N.Y.2d 1, 10). Section 305 does not violate the equal protection clause because taxing jurisdictions are not bound to assess property at 100% of full value as long as all property is assessed at a uniform percentage of value (see Sioux City Bridge v Dakota County, 260 U.S. 441). The Court of Appeals in Hellerstein v Assessor of Town of Islip ( supra) invalidated fractional assessment not upon constitutional grounds but based upon the language of section 306 Real Prop. Tax of the Real Property Tax Law. The Legislature, by repealing section 306 and adopting section 305, merely reverted to the pre- Hellerstein standard of uniform percentage of value and explicitly authorized the fractional assessment method already approved by the courts (see C.H.O.B. Assoc. v Board of Assessors, 45 Misc.2d 184, affd 22 A.D.2d 1015, affd 16 N.Y.2d 779).