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Can't assign slate button pointer to global variable

Crashes when clicked on created button with LOG error:

LogScript: Warning: Script Msg: No world was found for object (/Engine/Transient.UnrealEdEngine_0:GameInstance_0.PlayerHUD_C_0.Butt_0) passed in to UEngine::GetWorldFromContextObject().

 void UButt::OnClick()
     Cast<AThirdPersCharacter>(UGameplayStatics::GetPlayerPawn(this, 0))->OnClicku(this);
 void UMyUserWidget::NativeConstruct()
     UniformGridPanel = Cast<UUniformGridPanel>(GetWidgetFromName("UniformGridPanel_0"));
     UButt* PressedButton;
 void AThirdPersCharacter::OnClicku(UButt* ButtRef)
     UButt* TempUButt = ButtRef;//no crash
     CurrentButton = ButtRef;//crash

What should i do?

Product Version: UE 4.20
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asked Oct 11 '18 at 01:27 PM in C++ Programming

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