reset castsequence new focus

Is it possible to reset the castsequence when you change the focus?

I'm trying something like this but no luck so far

/castsequence [target=focus] reset=focus Rejuvenation, Regrowth, Healing Touch, Lifebloom; Healing Touch

I think i found it!
thx to invisahealz video explination found here

https://www.youtube.com/watch?v=gLqfeKFbHh4

for people who want to use it aswell

Edit: it seems to reset everytime i change enemy ....

There is no such reset condition. The ones available are:

target - You changed target (not focus)
combat - You entered or exited combat
<number> - The number of seconds since the last click
alt/shift/ctrl - Hold alt/shift/ctrl while clicking macro for castsequence to reset

Personally I often end up using a combination of <number> with a fairly low value and Combat. Seems to work OK especially since my healers are spamming 3-4 macros so I can spread the [@focus,help] spells a bit over those macros.