how to add a basic share button android

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using System.IO;
 using System.Runtime.InteropServices;

 public class socioshare : MonoBehaviour
 {
 string subject = "add any text here ";
 string body = "share your game link here";

 public void OnAndroidTextSharingClick()
 {
     //FindObjectOfType<AudioManager>().Play("Enter");
     StartCoroutine(ShareAndroidText());
 }

 IEnumerator ShareAndroidText()
 {
     yield return new WaitForEndOfFrame();
     //execute the below lines if being run on a Android device
     //Reference of AndroidJavaClass class for intent
     AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");
     //Reference of AndroidJavaObject class for intent
     AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");
     //call setAction method of the Intent object created
     intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));
     //set the type of sharing that is happening
     intentObject.Call<AndroidJavaObject>("setType", "text/plain");
     //add data to be passed to the other activity i.e., the data to be sent
     intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_SUBJECT"), subject);
     intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TITLE"), "TITLE");
     intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), subject);
     intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), body);
     //get the current activity
     AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
     AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");
     //start the activity by sending the intent data
     AndroidJavaObject jChooser = intentClass.CallStatic<AndroidJavaObject>("createChooser", intentObject, "Share Via");
     currentActivity.Call("startActivity",jChooser);
 }
 }

@hhhdshsdfh I am using this script to share the game link to all the social media apps. but the problem I am facing is that I am unable to print the 1st string "subject" in the message to be shared. 2nd string "body is being printed accurately. Rest everything works fine