Haha… don’t worry, we’re here to answer…
That shouldn’t happen really… ‘stays’ is a trigger but it sounds like it’s also acting as a condition.
I’ll make a piston for you later when I get home but can you post a green snapshot of where you’re at so far so I can double check.
When you click on Add a New Piston, and select Restore a Piston using a backup code, enter cr3a9 in the Please enter the backup bin code to restore from field and it will prompt you to select your presence sensors to use 
Yes… you’ll be asked to select your two presence sensors during the piston import process.
It worked thanks
Can you explain me on words why this change worked vs the other method?
When a piston is triggered, the whole lot gets evaluated… so if both parts are true, both parts get fired one after the other.
The stays present (trigger) seems to also behave like a condition (stayed present）
