Need help adding arabic sub to mkvmerge gui

vbimport

#1

hi…

i have some .MKV files and arabic subtitle files .srt files, i am trying to add the subs using mkvmerge GUI, i don’t get any errors, but the sub is weird character or english sub.
i do choose the language as arabic and the charset as arabic, but still dont get it…
any one know why…??