public XpManagerClass[] EditorXpManager;

        [System.Serializable]
        public class XpManagerClass{

            public static int xpToReach;
            public static int lifeLevel;
            public static int manaLevel;
            public static int attackLevel;
        }
// error log : Assets/Scripts/_Agis/SaverAndLoader.cs(175,117): error CS0176: Static member `SaverAndLoader.XpManagerClass.xpToReach' cannot be accessed with an instance reference, qualify it with a type name instead