[Tex/LaTex] How to reduce top margin in scrlttr2


i'm having problems searching for the solution. I'm writing a simple letter and I see that top margin is too large.
I tried


recommended in this answer, but nothing happened.
I also tried


recommended in but it seems to make the body of the letter go up, instead
of making the whole letter (including address and subject).


Best Answer

You can use

   Me, I  and myself}

or if you want to set the KOMA length directly


However, setting directly firstheadvpos should be done in a lco file (letter class options).