#Constant execution
/execute @e[type=armor_stand] ~ ~ ~ /tellraw @a[r=3,tag=!trigger] {"text":"Bienvenue sur Minecraft.Tools"}
/execute @e[type=armor_stand] ~ ~ ~ /scoreboard players tag @a[r=3,tag=!trigger] add trigger
/execute @e[type=armor_stand] ~ ~ ~ /scoreboard players tag @a[rm=5,tag=trigger] remove trigger