@yoonbunsik1 As per CRA, to make a repayment under the HBP, you have to make contributions to your RRSPs in the year the repayment is due or in the first 60 days of the year after. Once your contributions are made, you can designate all or part of the contributions as a repayment.
This means your designated repayment amount should be from the current tax year contributions.
For more information about HBP, we invite you to consult this link:
How to repay the amounts withdrawn from your RRSPs under the Home Buyers' Plan
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