Problem with fasmdll_managed.dll & C#

[Sel3n]

Hello (world?),

I'm try to call updatemodel() with using fasmdll_managed.dll, I have no errors to compile my project but when I try to execute, I get an error.

Error text

Assembly failed! Error code: -122; Error Line: 5

My code

public static uint updateModel()
        {
            uint CodeCaveUM = 0;
            if (!isInitiale) Initialise();
            {
                CodeCaveUM = Wow.AllocateMemory();

                fasm.Clear();

                fasm.AddLine("push 1");
                fasm.AddLine("push 1");
                fasm.AddLine("call {0}", offset.UpdateModel);
                fasm.AddLine("retn");
                
                fasm.InjectAndExecute(Wow.ProcessHandle, CodeCaveUM, 0);

                uint CodeCave = fasm.InjectAndExecute(CodeCaveUM);
                Wow.FreeMemory(CodeCaveUM);

                return CodeCave;
            }
        }

http://pastebin.com/m412f8449


Thread and process are open.
I have searched my error on many website but, I found nothing concerning a similar problem.

Any help is welcome =)

Cordially Sel3n.