pausing a particle system and restarting it

[Nixola]

Nixola, i tried the ps:stop() but then when i tried to ps:start() it didn't work
and i will try the same thing as the update but with the draw thanks I didn't thought about this

Just look a my example above.
It uses start & stop without any problems.
Nixola's approach works just as well.
The difference is 'stop' will stop particles from being generated. The particles already created will disappear.
Preventing 'update' from occurring (Nixola's approach) will just stop the generation of new particles and retain all the previously generated particles in their current positions.
Your problem should be solved!

I think you wanted to mention Beyek/Lafolie?

[Fatmat927]

it's alright instead of stopping the update i stopped the draw and it worked thank you