/// <summary>
 /// Set 1st custom dimension.
 /// </summary>
 /// <param name="customDimension">One of the available dimension values set in Settings (Setup tab). Will persist cross session. Set to null to remove again.</param>
 public static void SetCustomDimension01(string customDimension)
 {
     GA_Setup.SetCustomDimension01(customDimension);
 }