ffplay – adding subtitles on each vidio of hstack code

-vf subtitles=”Left.srt”
-vf subtitles=”Rite.srt”

this part below works ok but how can this add Subtitles on each videos of hstack code?
I moved the code up above around the below command but no luck

FFPLAY.EXE -f lavfi “movie=Left.mkv:seek_point=174, setpts=PTS-STARTPTS[v0];movie=Rite.mkv:seek_point=174, setpts=PTS-STARTPTS[v1];[v0][v1]hstack”

thanx guys