API EJ SetDifficultyByMask

Sets the Encounter Journal's viewed difficulty.
 EJ_SetDifficultyByMask(mask)
==Arguments==
;mask : Number - Difficulty Mask
Mask	Instance	Raid
1 	Normal 	10-man Normal
2 	Heroic 	25-man Normal
4 	 	10-man Heroic
8 	 	25-man Heroic
==Triggers events==
* 
==Details==
* The following variables are changed: EncounterJournal.is10Man, EncounterJournal.isHeroic
==Patch changes==
*