how to find ·RequiredSpellCast·

[COLOR=rgb(40,40,40)]in wiki, I found this RequiredNpcOrGo

Value > 0:required creature_template ID the player needs to kill/cast on in order to complete the quest.
Value < 0:required gameobject_template ID the player needs to cast on in order to complete the quest.
IfRequiredSpellCastis != 0, the objective is to cast on target, else kill.
NOTE: If RequiredSpellCast is != 0 and the spell has effects Send Event or Quest Complete, this field may be left empty.

but how to define RequiredSpellCast, in old database there have a [COLOR=rgb(84,84,84)]column in quest_templete named RequiredSpellCastX

but now I can’t found it.

there some quest have bug in tc2, just like quest 12070 http://www.wowhead.com/quest=12070 and 14108http://www.wowhead.com/quest=14108

it can not completed ,

how to edit this?