I have a problem with the scoreboard, on command "/change line 1" instead of editing the first line adds one. How you can solve? (Sorry for my bad english but I'm italian)

My test code:

command /test:
    trigger:
        loop all players:
            display board named "  TEST  " to loop-player
            make score "Line 1" in board of loop-player to 1
            move display of loop-player to sidebar

command /change line 1:
    trigger:
        loop all players:
            make score "First line change!" in board of loop-player to 1