Why my MoveToLocation don`t work in cpp

Development Programming & Scripting C++
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I just want my AI move to random location.
So i tried MoveToLocation() in TaskNode (every tick), but it always return failed. why???

(I already has NavMeshBoundsVolume in my level)

	auto AIController = Cast<AMyAIController>(OwnerComp.GetAIOwner());
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		EPathFollowingRequestResult::Type FollowResult = AIController->MoveToLocation(FinalLoc, -1, false, true);
		FString DebugText = UEnum::GetValueAsString(FollowResult);
		UE_LOG(LogTemp, Warning, TEXT("%s"), *DebugText);


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