Advanced Warrior macro help needed

[ironfang]

#showtooltip
/cast [mod:shift, stance:1] Rend; Thunder Clap
/cast [mod:shift, stance:2] Piercing Howl; Thunder Clap
/cast [mod:shift, stance:3] Piercing Howl; Pummel

Only recognizes Stance 1 (The top line) .... What am I doing wrong ?

Also is there a mod I can use to increase the amount of macro's I can make because the default Macro Ui seems rather limited for space.