public double GetCurrentSurplus(String resourcename)
        {
            if (String.IsNullOrEmpty(resourcename))
            {
                Debug.LogError("[KSPI]: GetOverproduction resourcename is null or empty");
                return(0);
            }

            ResourceManager manager = getManagerForVessel(resourcename);

            if (manager == null)
            {
                //Debug.LogError("[KSPI]: failed to find resource Manager For Current Vessel");
                return(0);
            }

            return(manager.getCurrentSurplus());
        }