How can I reduce top margin in scrlttr2?

Question

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

\setlength\topmargin{-50pt}

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

\@setplength{refvpos}{5cm}

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

Thanks!

Answer 1

You can use

\setkomavar{fromname}{%
  \vspace{-\useplength{firstheadvpos}}%
   Me, I  and myself}

or if you want to set the KOMA length directly

\makeatletter\@setplength{firstheadvpos}{0cm}\makeatother

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