COLUMBUS, Ohio (WANE) — Ohio Gov. Mike DeWine says his state’s million-dollar idea to provide incentives to Ohioans to get a COVID-19 vaccination is working.

DeWine tweeted Friday that vaccination rates in Ohio have spiked 28 percent since May 13, a day after the governor announced a series of statewide drawings to help incentivize vaccinations, including the chance to win up to $1 million.

Here’s how the drawings work:

Ohioans under the age of 18 who are eligible to receive a COVID-19 vaccine will be entered into a drawing for a four-year full scholarship to any of Ohioโ€™s state colleges and universities, including full tuition, room and board.

Ohioans aged 18 and older will be entered into a weekly drawing with a prize of up to $1 million.

Gov. DeWine announced that a total of five weekly drawings for each prize will take place, with the first winners being announced on May 26. Winners must have received at least one dose of a COVID-19 vaccine by the date of the respective drawing.

Several states have launched lottery incentives to drive up vaccination rates, including New York, which announced Thursday prizes up to $5 million.