LUA - CheckString

SuperStrict
Import axe.luascript
Import axe.lua

Global scriptEnv:TLuaScriptEngine = New TLuaScriptEngine
scriptEnv.Reset()

Function LUA_Greet1:Int( luastate:Byte Ptr )
Local name$=scriptEnv.CheckString(-1)
Print("Hello, "+name$+"!")
Return 1
End Function

scriptEnv.AddFunction(LUA_Greet1,"F_GreetTest1")

scriptEnv.setscripttext("F_GreetTest1('Test')","")

scriptEnv.runscript()

scriptEnv.ShutDown()

Need help... when i start it, it print:
Hello, @èc!
PLz help me