Form Item select

I use a dhtmlxForm with some itmes, togther with the net connector.
As long i use the combo item with dhtmlxComboConnector all works well.

Now i try to use the select item with dhtmlxOptionsConnector:

{ type: “select”, name: “CountryOfLocationID”, label: “Country of Location”, connector: “clsISO.ashx”, tooltip: “Country of Location”, info: true },

togther with this handler:

public override IdhtmlxConnector CreateConnector(HttpContext context)
{

        dhtmlxComboConnector connector = new dhtmlxOptionsConnector(
            "ISOLocation",
            "ID",
            dhtmlxDatabaseAdapterType.SqlServer2005,
            ConfigurationManager.ConnectionStrings["BMD_ODSdbConnectionString"].ConnectionString, 
            "Description"
        );
        if (context.Request.QueryString["dynamic"] != null)
            connector.SetDynamicLoading(2);
        return connector;
    }

And the box don’t populate anymore. So what to hell i’m doing wrong?

Best Regards,
Uwe