jxcore crashed at JX_CreateEmptyObject in sub instance creation thread

[yongxin100]

Hi
I am currently working on embedding jxcore to my robotic system program.When i am testing embedding api ,i produced the following code:

include "stdafx.h"

include "ScriptEngine.h"

include <windows.h>

include "thread"

include "mutex"

int main(int argc, char **args) {

char* homeFolder = args[0];


JX_InitializeOnce(homeFolder);
JX_InitializeNewEngine();

JX_DefineMainFile("console.log('parent engine')");

JXValue obj;

  **# // Parent engine created at main thread ,and JX_CreateEmptyObject worked ok!**
JX_CreateEmptyObject(&obj); 
JXValue global;
JX_GetGlobalObject(&global);
JX_SetNamedProperty(&global, "NativeBridge", &obj);
JX_Free(&obj);
JX_Free(&global);

JX_StartEngine();


//create a new engine instance and attach it to a new thread
thread t1 (create_new_engine);
t1.join();




Sleep(10 * 1000);

}

void create_new_engine() {

string homeFolder = "";
JX_InitializeNewEngine();

JX_DefineMainFile("console.log('sub engine')");

JX_StartEngine();

JXValue obj1;

  **# // sub engine created at new  thread ,and JX_CreateEmptyObject called fail!**

     //Exception thrown: read access violation.
     //__imp_TlsGetValue(...) returned nullptr.

    //program break at :
   //JXCORE_EXTERN(bool)
    //JX_CreateEmptyObject(JXValue *value) {
    // node::commons *com = node::commons::getInstance();

JX_CreateEmptyObject(&obj1);
JXValue global;
JX_GetGlobalObject(&global);
JX_SetNamedProperty(&global, "NativeBridge", &obj1);


JX_Free(&obj1);
JX_Free(&global);

JX_Loop();

JX_StopEngine();

}

My working enviroment is : windows 10 ,visual studio 2015,runing in vm fusion on mac

Thanks.