How to save a screenshots to files from C++ code?

For my project I need to be able to save multiple screenshots in a loop in C++ code from a rendered viewpoint.
I wrote the code that’s suppose to rotate the view each iteration by few degrees and saves screen shot with a
FScreenshotRequest::RequestScreenshot method, however after the loop is done I found only one screenshot from the last iteration is saved to the disk. This is my code:

PlayerControllerRef = Cast<APlayerController>(GetController());

	for (int32 Yaw = 0; Yaw < 180; Yaw += 5)
		FString fileName("C:/screenshots");
		UE_LOG(LogTemp, Warning, TEXT("%i"), Yaw);
		PlayerControllerRef -> GetPawn() -> SetActorRotation(FRotator(0.f, float(Yaw), 0.f));
		FScreenshotRequest::RequestScreenshot(fileName, false, false);

The Log shows warnings from all iterations. I call this code on BeginPlay of a pawn player.

Can this somehow be fixed so I can save all screenshots that I need, or maybe there is some other function to do this?