مشکل با آپدیت (خواهشا کمک کنید دیتا بعد از آپدیت شدن با مقدار قبلی باقی میمونه)

سلام دوستان مشکل این کد  چیه؟ کسی نیست  یعنی سوالش خیلی سخته ما سالی یه بار سوال میکنیم اونمو گیج کننده اس برامون 

 private TextView txtname;
    private TextView txtfamily;
    private TextView txtnumber;
    private EditText edtname;
    private EditText edtfamily;
    private EditText edtnumber;
    private Button   btnupdate;
    private int      itemid;
    private String   name;
    private String   family;
    private String   number;
    private String   getname;
    private String   getfamily;
    private String   getnumber;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.update);
        txtname = (TextView) findViewById(R.id.txt_name);
        txtfamily = (TextView) findViewById(R.id.txt_family);
        txtnumber = (TextView) findViewById(R.id.txt_number);
        edtname = (EditText) findViewById(R.id.edtname);
        edtfamily = (EditText) findViewById(R.id.edtfamily);
        edtnumber = (EditText) findViewById(R.id.edtnumber);
        btnupdate = (Button) findViewById(R.id.btnupdate);
        Bundle extras = getIntent().getExtras();

        if (extras != null) {
            itemid = extras.getInt("ID");
            name = extras.getString("name");
            family = extras.getString("family");
            number = extras.getString("number");
            edtname.setText(name);
            edtfamily.setText(family);
            edtnumber.setText(number);
        }

        getname = edtname.getText().toString();
        getfamily = edtfamily.getText().toString();
        getnumber = edtnumber.getText().toString();
        btnupdate.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                G.database.execSQL("UPDATE contact SET name = " + getname + ",family = " + getfamily + ",number = " 
+ getnumber + " WHERE  id = " + itemid);
                Toast.makeText(G.context, "مخاطب با موفقیت ویرایش شد.", Toast.LENGTH_SHORT).show();
                finish();
            }
        });

    }


    @Override
    protected void onResume() {
        G.CurrentActivity = this;
        super.onResume();
    }

اینم خطای لاگ :

05-25 16:18:16.524: E/AndroidRuntime(16190): android.database.sqlite.SQLiteException: 
no such column: میلاد (code 1): , while compiling: UPDATE contact SET name = میلاد,family = احمدی,number = 545 WHERE  id = 2