Problem whit set combo on grid

Hi all i set a combo on grid… but when I change the column and then filter, i have the key and i need the discription, i dont know what is the problem… i need to see the description but not the key …

function loadGrid(){
// Combo
mygrid.attachEvent(“onEditCell”, function(stage,rowId,cellIndex,newValue,oldValue){

      if (stage == 0){
            if(mygrid.getColIndexById('type') == cellIndex){   
            combo();
            
            }
      }
	  return true;
});

}

/**

  • SET Combos
    **/
    function combo(){
    var selectRow = mygrid.getSelectedRowId();
    var selectCol = mygrid.getColIndexById(‘type’);
    var combo = mygrid.cells(selectRow,selectCol).getCellCombo();

    combo.readonly(true);
    combo.clearAll(true);
    combo.addOption(‘CT’,‘Control’);
    combo.addOption(‘CA’,‘Control Admin’);
    combo.addOption(‘AM’,‘Amb’);
    }

solved problem:

mygrid.attachEvent(“onCollectValues”,function(ind){
if (ind == 3 ) return [‘one’,‘two’,‘some’];
return true;
});