How to use setevent to stop process handler

I'm trying to createProcess then inherit process handle to event handle

HANDLE app_event;

TCHAR* path = L"C:\\My.exe";
STARTUPINFO info;
PROCESS_INFORMATION processInfo;

ZeroMemory(&info, sizeof(info));
info.cb = sizeof(info);
ZeroMemory(&processInfo, sizeof(processInfo));

CreateProcess(path, NULL, NULL, NULL, TRUE, 0, NULL, NULL, &info, &processInfo);

ThreadId = processInfo.dwThreadId;


app_event = CreateEventW(nullptr, TRUE, FALSE, nullptr);
DuplicateHandle(GetCurrentProcess(), processInfo.hProcess,
    GetCurrentProcess(),
    &app_event,
    0, FALSE,
    DUPLICATE_SAME_ACCESS);
CloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);

and I'm creating thread for event

But when I call setEvent to stop process

The process don't stop and i got stuck at WaitForSingleObject

SetEvent(app_event);

WaitForSingleObject(app_thread, INFINITE);

Am I doing something wrong?

Sorry I'm new to C++.