Help - Add /w into your macro?

As the topic says.

So i’ve been playing around with some lazy macros on my hunter.
So ‘‘i’ve’’ made a burst, single and aoe macro, which works pretty well but, there is a small problem with the burst macro.
The macro itself is great! Doing 22k burst with my BM hunter on a dummy without any raid buffs. (350ilvl)
But the macro is only used for burst so is made with one line of > /castsequenc reset=combat <
So that means once the macro is complited it stops casting and therefor no dps output.
Ofc if i pay good attentions i can see when its done and swap to my single target macro
(the way i knows its done is that i have 100 focus … so not that optimal)
But if i could add something like > /whisper name SWAP < would be great but i just dont know how to.
If i just add /whiper after the casts sequence it would spam whisper me.

So if anyone out here knows the trick, let me know - Thanks!
Sorry about the English