Ok. Ceci devrai te satisfaire:
command /board:
trigger:
if {board} is true:
display board named "&6UHC" to player
make score "&6Timer: &c%{time.m}%:%{time.s}%" in board of player to 1
move display of player to sidebar
if {board} is false:
display board named "&6UHC" to player
make score "&6Timer: &c%{time.m}%/%{time.s}%" in board of player to 1
every 1 second:
make all players execute command "/board"
add 1 to {time.s}
if {time.s} is 60:
set {time.s} to 0
add 1 to {time.m}
command /b <text>:
trigger:
if arg 1 is "on":
set {board} to true
if arg 1 is "off":
set {board} to false
Quand tu fait /b on, il y a le Scoreboard et quand tu veut /b off il disparait !