Android : as one of the Activiti transfer data to another via Serializable?

help with the transfer of data from the adapter to Activiti, so I need to honor id by pressing the button, if easier, clicking on the level of data is transferred to another level of pressed Activiti. I have a problem with the transmission, by clicking on any level gives the parameters of the first level, tell me what is wrong with me .. Adapter code:

package com.example.mygames;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;

public class lvladapter extends BaseAdapter {
private Context mContext;

public tasklvl[] lvl = {
new tasklvl ("android.resource://com.example.mygames/raw/" + R.raw.son_new, "son"),
new tasklvl ("android.resource://com.example.mygames/raw/" + R.raw.trolley_new, "sona"),
new tasklvl ("android.resource://com.example.mygames/raw/" + R.raw.son_new, "sons")
};

public lvladapter(Context c) {
    mContext = c;
}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return lvl.length; 
}

@Override
public tasklvl getItem(int position) {
    // TODO Auto-generated method stub
    return lvl[position];
}

@Override
public long getItemId(int arg0) {
    // TODO Auto-generated method stub
    return arg0;
}



@SuppressLint("NewApi")
@Override
public View getView(final int position, View arg0, ViewGroup arg2) {
    Button button = new Button(mContext);
    button.setText(String.valueOf(position+1)); 
    button.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Intent intent = new Intent(mContext, actActionLvl.class);
            Bundle args = new Bundle();
            args.putSerializable("Key", getItem(position));
            mContext.startActivity(intent, args);


        }

  });
    return button;
}


}

code lvl:

package com.example.mygames;

import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.VideoView;


public class actActionLvl extends Activity implements OnClickListener {

    Button ok;
    EditText otvet;
    TextView rezalt;
    VideoView vv01;
    tasklvl lvl;
    //tasklvl lvl1 = new tasklvl ("android.resource://com.example.mygames/raw/" + R.raw.son_new, "son");    

    public void onCreate (Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.mainlvl);
    lvl = (tasklvl)getIntent().getSerializable("Key");



       ok = (Button) findViewById(R.id.ok);
       otvet = (EditText) findViewById(R.id.otvet);
       ok.setOnClickListener(this); 
       rezalt = (TextView) findViewById(R.id.rezalt);



       VideoView vv = (VideoView)this.findViewById(R.id.vv01);      
       Uri video = Uri.parse(lvl.geturl());
       vv.setVideoURI(video);       
       vv.start();


        OnClickListener oclBtnOk = new OnClickListener() {
            @Override
            public void onClick(View v) {
                String otv = otvet.getText().toString();
                switch (v.getId()) {
                case R.id.ok:
                if (lvl.proverka(otv)) {
                    rezalt.setText("правильно");
                }  else {

                    rezalt.setText("Неправильно");
                }


                  break;

                }

            }
          };

          ok.setOnClickListener(oclBtnOk);






}

@Override
public void onClick(View arg0) {
    // TODO Auto-generated method stub

}       
}

tasklvl code :

 package com.example.mygames;

 import java.io.Serializable;
 @SuppressWarnings("serial")
 public class tasklvl  implements Serializable{

private String  url, otvet;
private Boolean win;

public tasklvl (String  url, String otvet) {
    this.url = url;
    this.otvet = otvet;
    this.win = false;
    }

public String geturl () {
    return this.url;    
}   
public void seturl (String u) {
    this.url = u;       
}   

public String getotvet () {
    return this.otvet;  
}   
public void setotvet (String o) {
    this.otvet = o;     
}
public Boolean getwin () {
    return this.win;    
}   
public void setwin (Boolean w) {
    this.win = w;       
}

public Boolean proverka (String text) {
    if (text.equalsIgnoreCase(this.getotvet())) {
        return true;
    } 
    else {
        return false;
    }   
}


 }