why does /scoreboard players set @s np.timer2 6000 keep summoning pigs?

tick functinon
execute as @e[scores={np.timer2=1}] at @s run function nb:convert```

convertproc
```# Run as converting piglin
execute as @e[tag=convert] at @s run function nb:convert_effects

scoreboard players add Orichalthyl np.timer2 6000```

convert
```kill @e[type=minecraft:zombified_piglin,tag=convert]
function nb:random_zombie
summon pig ~ ~ ~
particle minecraft:poof ~ ~0.75 ~ 0.25 0.5 0.25 0.1 25 normal
playsound minecraft:block.lava.extinguish master @a ~ ~ ~
playsound minecraft:entity.zombie_villager.converted master @a ~ ~ ~ 0.8 1.5```