Vincent Peterkin

hi I have a question similar to the above. I make £70000 a year and i have received a dividend of £10000. i want to offset the tax owed on this by putting money in a sipp. if i put £5650 into a sipp i should get a top up and a rebate of £1130 which should cover the £1130 tax i would have to pay on the £4350 of the dividend that i would keep. Am i right in my thinking.