priest dmg macro help

[Shadraak]

/castsequence [target=focustarget] reset=18/combat Shadow Word: Pain, Chastise, Holy Fire, Mind Blast
is what i have only problem is chastise only works on humanoids, and if it's not a humanoid target it stops and only does pain, any way around that that if it's not humanoid to skip it and go on?

[Doostin]

just take it out of the macro altogether and use a different button for it =p

[Shadraak]

good answer, but was actually wondering if there was an actual way to do this? not only for this scenario but for others? where you can put in a line if it's not humanoid to go to the next line rather than stopping whole macro.