Modifier on macro do not work

Greetings, i'm sorry in advance if i post in the wrong part of the forum;

I can't make this macro work as intended:

#showtooltip Vanish
/cast [mod:ctrl] Vanish
/cast Premeditation
/cast [nomod, @target] [stance:1/2/3] Cheap Shot; [stance:0] Shadow Dance
/cast [mod:alt, @focus] [stance:1/2/3] Cheap Shot; [stance:0] Shadow Dance

I tried many different ways of writting it but it still cast the shadowdance as i press [ctrl], it even launch itself if i place the [mod:ctrl, @target] on the shadowdance.

thanks for your time.