First, let me clarify. I made other stats work correctly, but not to interact with this particular plugin correctly.
Second, I copied the error:
TypeError: Cannot read property 'isHp' of undefined
at Object.isHpType (EliMZ_CustomParameters.js:360)
at Game_Actor.Game_BattlerBase.addCParam (EliMZ_CustomParameters.js:994)
at Game_Action.itemEffectGrowC (EliMZ_CustomParameters.js:716)
at Game_Action.applyItemEffectC (EliMZ_CustomParameters.js:683)
at Game_Action.applyItemEffect (EliMZ_CustomParameters.js:649)
at Game_Action.apply (rmmz_objects.js:1926)
at Game_Action.apply (CGMZ_ExtraStats.js:966)
at Scene_ItemBase.applyItem (rmmz_scenes.js:1636)
at Scene_ItemBase.useItem (rmmz_scenes.js:1597)
at Scene_Item.useItem (rmmz_scenes.js:1746)
SceneManager.catchNormalError @ rmmz_managers.js:2036
SceneManager.catchException @ rmmz_managers.js:2024
SceneManager.update @ rmmz_managers.js:1945
Graphics._onTick @ rmmz_core.js:811
TickerListener.emit @ pixi.js:9093
Ticker.update @ pixi.js:9548
Ticker._tick @ pixi.js:9298
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301
requestAnimationFrame (async)
Ticker._tick @ pixi.js:9301