java - SeekBar の値を以前のアクティビティに戻す方法は?

Question

Activity BからActivity AseekBarに値を返す方法は ?

seekBar=(SeekBar)findViewById(R.id.seekBarPercentage);

save.setOnClickListener(new View.OnClickListener()  //return to previous activity {
    @Override
    public void onClick(View v) {
        Intent returnIntent=new Intent();
        Project=project.getSelectedItem().toString(); //spinner value
        Description=description.getText().toString(); //editText value
        // seekBar value ?
        returnIntent.putExtra("Project",Project);
        returnIntent.putExtra("Description",Description);
        setResult(Activity.RESULT_OK,returnIntent);
    }
});

seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
    int progress = 0;

    @Override
        public void onProgressChanged(SeekBar seekBar, int progresValue, boolean fromUser) {
            progress = progresValue;
            // Toast.makeText(getApplicationContext(), "Changing seekbar's progress", Toast.LENGTH_SHORT).show();
        }
        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            //  Toast.makeText(getApplicationContext(), "Started tracking seekbar", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            progressText.setText("Covered: " + progress + "/" + seekBar.getMax());
            // Toast.makeText(getApplicationContext(), "Stopped tracking seekbar", Toast.LENGTH_SHORT).show();
        }
    });

}