tick.mcfunction problem in datapack

i am doing a minigame where a want a function to run when the player has the "blueflag" tag and has a score of 1 in death so i added this command in tick.mcfunction: "execute at @a[tag=blueflag] if score @s death matches 1 run say i am working" so it always checks if a player meet these requierement but nothing happens (other commands in tick.mcfunction work), i tried to run the command by my self in game making sure a had the tag and died once and it worked... sorry for my bad english i am french