Jak to řikaté, "Matěj, how are you tall"? (That is, if someone was asking the means by which a particular person got to be as tall as they are.)

After spelling the name "Matej", the system marked the translation correct, but added "Pay attention to accents". There was not the row of buttons for accented letters that some screens have. On a keyboard that does not have accents, how can accents be included in the spellings?

Can't you translate "Matěj, what is your length?"

I understand why it is the vocative case - same in Polish. But in casual conversion it sounds natural to draw someone attention by saying his/her name in the nominative case?

Matěj... jak jste vysoký?

I noticed that i don't use vocative so often.