first of all why you are using SqlDataSource instead for sp to update it

accordingly modify the your CheckBox2_CheckedChanged event as 

protected void CheckBox2_CheckedChanged(Object sender, EventArgs e)
    {
        CheckBox CheckBox2 = (CheckBox)sender;
       // call the sp to update PersonalCall = CheckBox2.Checked passing the parameter
    }

and secondly what errors come. let me know