UGameplayStatics::SetPlayerPlatformUserId

function Engine Blueprint Since 5.1

#include "Kismet/GameplayStatics.h"

Access: public Specifiers: staticUFUNCTIONBlueprintCallable

Description

Associates a platform user account ID with a local PlayerController, used to link online identity (achievements, cloud saves) to a specific local player slot.

Caveats & Gotchas

• Introduced in UE 5.1 alongside the platform user ID refactor. Not available in earlier engine versions.
• Only applies to local PlayerControllers. There is no validation that the UserId is currently signed in — passing an invalid ID will silently succeed but break any downstream online subsystem calls that rely on the association.
• Changing the UserId after online sessions have started can desync leaderboard and achievement reporting for that player.

Signature

static ENGINE_API void SetPlayerPlatformUserId(APlayerController* PlayerController, FPlatformUserId UserId);

Parameters

Name	Type	Description	Default
PlayerController	APlayerController*	The local PlayerController to update.	—
UserId	FPlatformUserId	The platform user ID to assign to this player.	—

Return Type

void

Example

Reassign platform identity after a user sign-in event C++

void AMyGameMode::OnUserLoggedIn(FPlatformUserId NewUserId)
{
    APlayerController* PC = UGameplayStatics::GetPlayerController(this, 0);
    if (PC)
    {
        UGameplayStatics::SetPlayerPlatformUserId(PC, NewUserId);
    }
}

Version History

Introduced in: 5.1

Version	Status	Notes
5.6	stable	—
5.1	stable	Introduced with platform user ID refactor.

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