Here's the code I added to loot.json. I want only the mobs listed in each entry to drop the Heart Container item. Unfortunately, every single mob is not dropping the container. Can someone help?

{
"mob": "erebus:erebus.antlion_boss",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "erebus:erebus.crushroom",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "erebus:erebus.tarantula_mini_boss",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "erebus:erebus.umber_golem_idol",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
}, {
"mob": "twilightforest:snow_queen",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "minecraft:elder_guardian",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:naga",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:lich",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:minoshroom",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:hydra",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:ur_ghast",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:yeti_alpha",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:giant_miner",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "twilightforest:knight_phantom",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "aether_legacy:valkyrie_queen",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "aether_legacy:slider",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "aether_legacy:sun_spirit",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "lost_aether:king_aerwhale",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "atum:pharaoh",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "netherex:ghast_queen",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "grue:entitygrue",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "thebetweenlands:spirit_tree_face_large",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "thebetweenlands:dreadful_mummy",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "thebetweenlands:fortress_boss",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "thebetweenlands:sludge_menace",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "iceandfire:dragon",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "iceandfire:icedragon",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "iceandfire:seaserpent",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "thaumcraft:eldritchgolem",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "thaumcraft:eldritchwarden",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "minecraft:ender_dragon",
"player": true,
"random": 1,
"item": "scalinghealth:heartcontainer",
"itemcount": "1-1/1-1/1-1"
},
{
"mob": "specialmobs:huskzombie",
"player": true,
"random": 0.1,
"item": "atum:scarab",
"itemcount": "1-1/1-1/1-1"

Can you check the logs to see if there is an error there?

No errors came through on the log, but I did some testing and I don't think the issue is on InControl's side. Seems like in trying to edit the loot tables associated with the iceandfire:dragon mob, the drops of all entities are affected.