Error in loot neoforge 1.21.1

Hi, when I try to set the number of items dropped at different levels of looting, the maximum number of items drops, regardless of the enchantment.
{
  "mob": "minecraft:mule",
  "remove": "minecraft:leather"
},
{
  "mob": "minecraft:mule",
  "item": "ytech:raw_hide",
  "itemcount": "0-1/1-2/2-2"
}