autoit function not working in node.js addon c++

here is the snippet of my code which I am using in node.js addon(C++).

        p1 funcHandle1 = (p1)GetProcAddress(dllHandle,"AU3_Run");
        p2 funcHandle2 =(p2)GetProcAddress(dllHandle,"AU3_Sleep");
        p3 funcHandle3 = (p3)GetProcAddress(dllHandle,"AU3_Send");
        funcHandle1(L"notepad", L"", 1);//opening notepad
        funcHandle2(1000);
        funcHandle3(L"test1");  //typing test1 also 
        funcHandle2(1000);
        funcHandle1(L"notepad", L"", 1);//opening notepad again
        funcHandle2(1000);
        funcHandle3(L"test2");//but not able to type anything and nothing doing further
        funcHandle2(1000);
        funcHandle3(L"{tab}");

My script is paused or get killed ?