{
 "model": {
  "type": "range_dispatch",
  "property": "custom_model_data",
  "fallback": {
   "type": "model",
   "model": "minecraft:item/gunpowder"
  },
  "entries": [
   {
    "threshold": 1,
    "model": {
     "type": "model",
     "model": "item/gunpowder/button_simulator_tnt_new"
    }
   }
  ]
 }
}