Android Plugin in Unity - No Return Value

im trying to create an android plugin and import it in unity but i always get 0 as return value from the plugin method and i cant fix t$$anonymous$$s issue.

Here is what i did:

AndroidStudio: -Created a new project -Created a library module (package: com.projectm.myplugin) -Created Public Class "myclass" -Build -> "Make Module 'myplugin'" -copied "classes.jar" file into "Assets/Plugins/Android" in Unity

Full Java Code:

 package com.projectm.myplugin;
 
 public class myclass {
     public int mymethod(){
         return 110;
 
     }
 }

And here is my c# script:

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class TextScript : MonoBehaviour
 {
 
     public Text Text1;
     private AndroidJavaObject JavaTimerClass;
     // Start is called before the first frame update
     void Start()
     {
         //Text Text1 = GetComponent<Text>();
         JavaTimerClass = new AndroidJavaObject("com.projectm.myplugin.myclass");
         Text1.text = JavaTimerClass.Call<int>("mymethod").ToString();
 
     }
 
     // Update is called once per frame
     void Update()
     {
         
     }
 
     void OnApplicationPause(bool pause)
     {
         if (pause)
         {
  
         }
         else
         {
  
         }
     }
 
 }

TextPlugin.text should display "110" but its always 0. It seems like the name of the package cant be found Hopefully someone can help me. Im new to unity⩓roidstudio and followed many tutorials on youtube but i cant fix t$$anonymous$$s issue.

Im trying to fix t$$anonymous$$s bug since over a week. guys please i need help.

Unity Version: 2019.3.13f1