About Skill buff spells

[Catar]

Mega, i got some questons about how Re-User works, and if we can somehow make macro that is similar on them.

What i mean is, right now in my script i use Blood Rage right before attacking with Annihilation.
I did that by creating macro who can use Blood Rage only when certain variable is = 0 , then it will change variable:=1 when using utito tempo,
after that exori gran ico macro, can be only used when this variable is 1, after using it, it will ZERO it back.

To avoid spamming utito tempo when I dont want it to, i used few things, few conditions, like Monsters health, mana.
But I also had to create timer, so it won't use it for certain amount of time, (before previous ends)

But what i notice, Re-user uses utani hur always when its gone, even when got u get suddenly paralyzed and u lose haste before it runs out of time,
it detects that I lost buff and uses it again.

Same goes to blood rage

How is it done, how is it setup to not spam before buff timer runs out.

Does it check actual status of character? Like Status.Paralysis commands?
Can we somehow acces that command to simplify macros?