Hot end heater pin migration problems.

Hi, i have a problem whit my hot end heater. It is no longer heating, i managed to measure the continuity and the resistance values of both the PT100 and the heating resistance, and they are ok.
I suspect my board mosfet is dead since i get no voltage when i trigger the heater, so i tried to migrate to the second heater HE1 PA3 pin for my stock octopus but i keep getting the error in the picture.
It may be that i get the syntax wrong but i tried the formats on the os site and what i found in the discord but nothing works.
Can anyone help me whit a pin change syntax please. Or an idea what is the problem. Thank you!
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