/cast [mod:shift] Blizzard
/cast Flamestrike

If I put "/cast Flamestrike"or "/cast [mod:shfit] Blizzard by itself, it works fine.

However, if I put them together, only the Flamestrike will cast,

IF I switch Blizzard and Flamestrike in the marco, only Blizzard will cast

My idea was to merge differ cast time spell together, (fireball/frostbolt, Fire Blast/Cone of Cold)

I was able to get the others to work but not " Blizzard/Flamestrke"

Am I missing some modifier, or blizzard UI do not allow 2 AOE in the same marco.

Thks for any help U can give me.