7-hydroxy-8-methoxyflavone + S-adenosyl-L-homocysteine + H(+) => 7,8-dihydroxyflavone + S-adenosyl-L-methionine
7-hydroxy-8-methoxyflavone + s-adenosyl-l-homocysteine + h(+) => 7,8-dihydroxyflavone + s-adenosyl-l-methionine