Additional Child Tax Credit with PYEI

[HV Ken]

According to the instructions: To make this election (to use prior year earned income), enter “PYEI” and the amount of your 2019 earned income in the space next to Form 1040, line 28.

I know how to do this for EIC, but can't see how to do this for the ACTC.

What is the incantation I need to perform this magic?

[Pacun]

enter that 2019 EI amount in box 6a of form 8812.