GetNickname has Hex digits on the end of the name?

[anonymous_user_01dd28a6]

My code

		ULocalPlayer* Player = Cast<ULocalPlayer>(PlayerController->Player);
		return FString( Player->GetNickname() );

Returns a string like “JoeCool-AF436747FDC”
so it is the gamertag with a hex string on the end.
Is there some other call or way to get just “JoeCool” ?