Can I put in 4 years worth of HBP into the box "Enter the amount you wish to designate as a Home Buyers Plan repayment?" I've failed to fill this part in the past.

I took money out of RRSP under the HBP in 2013. I have a repayment system already in place with my bank. I have been receiving yearly income statement about my RRSP repayment and have been claiming as part of RRSP deduction. I realized now that I haven't been filling out the HBP section esp. the box "Enter the amount you wish to designate as a Home Buyers' Plan repayment". I want to make sure that the 4 years worth of repayment is reflected in the Notice of Assessment.