putExtra String Intent Android

public boolean onContextItemSelected(MenuItem item) {
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
    m = lv.getAdapter().getItem(info.position).toString();

    Toast.makeText(getBaseContext(), \"You clicked !\"+m, Toast.LENGTH_SHORT).show();


    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage(\"Are you sure you want to delete this Fixture?\");
    builder.setCancelable(false);

    builder.setPositiveButton(\"Yes\", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            //listAdapter.remove(m);

            Intent i  = new Intent(Afc.this.getApplicationContext(), WebViewExample.class);
            i.putExtra(\"Key\", m); 
            startActivity(i);   
        }

Bundle extras = getIntent().getExtras(); 
      String addOn = extras.getStringExtra(\"key\",m);
      Toast.makeText(getBaseContext(), \"You clicked !\"+addOn, Toast.LENGTH_SHORT).show();