xamarin.android function first letter upper in c#，but in v8 will be lowercase

[tianlv777]

C#
var sanwei = new sanweidian();
j["system"] = j.Marshal(sanwei, SerializationMode.Reference);
var aaa = j.Evaluate("var ck=system.jiejue1(123456);","nnn");

public class sanweidian
{
public int x;
public int y;
public int z;
public sanweidian()
{
x = 0;
y = 0;
z = 0;
}

        public int jiejue(int ccc)
        {
            x = ccc;
            return 987;
        }

        public Books Jiejue1(int ccc)
        {
            Books BBB = new Books();
            BBB.x = 131;
            BBB.y = 132;
            return BBB;
        }

    }

---

var aaa = j.Evaluate("var ck=system.jiejue1(123456);","nnn");
this ok.
var aaa = j.Evaluate("var ck=system.Jiejue1(123456);","nnn");
can't find function
e,C# this function name is Jiejue1,not jiejue1.
how to do?