RevenueFromVisTbl RevenueFromVisTbl ;
RevenueIntegration.RevenueProperty tes = new RevenueIntegration.RevenueProperty();
RevenueIntegration.GetDataCls test = new RevenueIntegration.GetDataCls();
System.Type listType = System.Type::GetType('System.Collections.Generic.List`1[System.String]');
CLRObject list = System.Activator::CreateInstance(listType);
list = test.select_VCB("2020","01");
...