diff --git a/src/types.ts b/src/types.ts
index 63d0469..103309e 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -575,25 +575,33 @@ export class Internal {
     return [prop, isAsync] as const
   }
 
+  private static prepareArg(params: string[], args: any[]) {
+    const fixedArg = Object.fromEntries(params.map((name, index) => [name, args[index]]))
+    for (const key in fixedArg) {
+      if (key.endsWith("_id")) fixedArg[key] = +fixedArg[key]
+    }
+    return fixedArg
+  }
+
   static define(name: string, ...params: string[]) {
     const [prop, isAsync] = Internal.prepareMethod(name)
     Internal.prototype[prop] = async function (this: Internal, ...args: any[]) {
-      const data = await this._get(name, Object.fromEntries(params.map((name, index) => [name, args[index]])))
+      const data = await this._get(name, Internal.prepareArg(params, args))
       if (!isAsync) return data
     }
     isAsync && (Internal.prototype[prop + 'Async'] = async function (this: Internal, ...args: any[]) {
-      await this._get(name + '_async', Object.fromEntries(params.map((name, index) => [name, args[index]])))
+      await this._get(name + '_async', Internal.prepareArg(params, args))
     })
   }
 
   static defineExtract(name: string, key: string, ...params: string[]) {
     const [prop, isAsync] = Internal.prepareMethod(name)
     Internal.prototype[prop] = async function (this: Internal, ...args: any[]) {
-      const data = await this._get(name, Object.fromEntries(params.map((name, index) => [name, args[index]])))
+      const data = await this._get(name, Internal.prepareArg(params, args))
       return data[key]
     }
     isAsync && (Internal.prototype[prop + 'Async'] = async function (this: Internal, ...args: any[]) {
-      await this._get(name + '_async', Object.fromEntries(params.map((name, index) => [name, args[index]])))
+      await this._get(name + '_async', Internal.prepareArg(params, args))
     })
   }
 }