get a combo options in a combo of form

I set a combo in a form.

On the other hand, I set a group of options of combo.

Due to the the options are come from combo connector.

Now I have two group usage. One is a combo in a form and other is a group of options of combo.

Now I want to ask how put the combo connector options into a combo in a form ?

I try run itself. Two is work. Form combo is ok. Alone combo options is ok.

How combione them ?

The below combo is in a Form


         {
                     type: "combo",
                     label: "Table Type :",
                  name: "tabletype",
                  validate: "ValidAplhaNumeric",
                  labelWidth: 150,
                     inputWidth: 150                 
                   },      

The below combo is alone.


{
  var grid_Action;

    var rowID = 1;

    var value;

    var combo = new dhtmlXCombo("combo_zone3", "alfa3", 200);

    combo = frmMain.setValue("tabletype");

    var sqlString;

    grid_Action = new dhtmlXGridObject('gridbox');


    sqlString = "GridConnector.ashx?strSQL=SELECT * FROM TESTING_TREE ";

    grid_Action.setHeader("id, parent_id, text");


    grid_Action.init();

    grid_Action.loadXML(sqlString);


    //   combo.loadXML("ComboConnector.ashx?strSQL=SELECT * FROM TESTING_TREE ");

    //  combo = grid_Action.getColumnCombo(2);

    var arr = [], value;

    alert("testing ok !");

    grid_Action.forEachRow(function (id) {
        value = grid_Action.cells(id, 1).getValue();

        arr.push([id, value]);
    });


    combo.addOption(arr);


    };

Hello
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