How can i properly use FPlatformProcess::ReadPipe?

Hi, I’m trying to make a child process dynamically and give it a signal through pipe made in parent process.

I created pipe with FPlatformProcess::CreatePipe and put those values as parameters of FPlatformProcess::CreateProc.

child process successfully pops up but how can child read pipe from parent?

child doesn’t have any clue about address of pipe from parent but FPlatformProcess::ReadPipe requires the address of pipe.