Otro ejemplo mas completo que hice, estuvo complicado pero ya esta, sobre las combinaciones finacneras Ax 2012

public static DimensionDynamicAccount CrearCombinacion(DimensionDisplayValue _DimensionDisplayValue)
{

    DimensionStorage DimensionStorage;
    DimensionAttributeValue dimAttributeValue;
    DimensionStorageSegment DimensionStorageSegment;
    MainAccount MainAccount;
    recid dimHierarchyId;
    recid mainAccountRecId;
    DimensionValue _DimensionValue;

    container cont;
    int i;

    container dimensiones=["MainAccount","División","Sucursal","CentroCosto"];

    ;
    cont=str2con(_DimensionDisplayValue,"-");
     ////declarar el objecto
    DimensionStorage=DimensionStorage::construct(0,LedgerDimensionType::Account);

    for(i=1;i<=conLen(cont);i++)
    {
        try
        {
                 _DimensionValue=conPeek(cont,i);


                 if(i==1)
                 {
                        dimAttributeValue = DimensionAttributeValue::findByDimensionAttributeAndValueNoError(
                        DimensionAttribute::findByName(conPeek(dimensiones,i)),
                        _DimensionValue,
                        false,
                        true);

                        mainAccountRecId= DimensionAttributeValue::find(dimAttributeValue.RecId).EntityInstance;
                        dimHierarchyId = DimensionHierarchy::getAccountStructure(mainAccountRecId);
                        DimensionStorage.addHierarchy(dimHierarchyId);

                        DimensionStorageSegment=DimensionStorageSegment::constructFromValue(dimAttributeValue.CachedDisplayValue,dimAttributeValue);
                        DimensionStorage.setSegment(i,DimensionStorageSegment);
                 }
                 else
                 {
                     if(_DimensionValue!="")
                     {
                        dimAttributeValue = DimensionAttributeValue::findByDimensionAttributeAndValueNoError(
                        DimensionAttribute::findByName(conPeek(dimensiones,i)),
                        _DimensionValue,
                        false,
                        true);

                        DimensionStorageSegment=DimensionStorageSegment::constructFromValue(dimAttributeValue.CachedDisplayValue,dimAttributeValue);
                        DimensionStorage.setSegment(i,DimensionStorageSegment);
                     }
                     else
                     {
                          DimensionStorageSegment=DimensionStorageSegment::emptySegment();
                          DimensionStorage.setSegment(i,DimensionStorageSegment);
                     }

                 }

        }
        catch
        {
            return 0;
        }
    }


   return DimensionStorage.save();


}