Macro Help

[Aelindice-darkspear]

Is there a way to make this work?

#showtooltip Slice and Dice
/castsequence Marked for Death, Slice and Dice
/cast [modifier:shift] Slice and Dice

[Elvenbane-veknilash (Elvenbane)]

#showtooltip Slice and Dice
/castsequence [mod:shift] Slice and Dice; Marked for Death, Slice and Dice