Am I using 'ontimer' incorrectly?

[KoRnemuse]

Hello everyone!
I post here cause I have a question about the using of ontimer.

I know that ontimer call a function but whenever I try to call a function which needs an argument I got an error on the type of my argument. It says 'Nonetype' object is not callable.

I precise that I created the argument before calling ontimer.

Here's what I want to do:

init = False
vizact.ontimer(0,suivi(init))

I can tell that my function is working perfectly because I tried it without the timer on.

Cheers KoRnemuse