For the life of me I cannot get my Arcane mage macro to work using a series of /click's

I am trying to do Arcane Blast X3, Arcane Missiles, Arcane Barrage each spell on a different macro (so five macros) activated by a main /click macro.

It seems as if that even though I have three separate macros for each Arcane Blast it behaves as though AB went off on all three and progresses through the castsequence on all three macros.

Any help is appreciated. Thanks!