Lightbox automatically reopens when with seekbar

I also tried to set variables to prevent lightbox openning. But it was a failure :

Say I want to open the popup only when the media reaches 10s.

• I created a variable canopenpopup with default true.
• I set canopenpopup to true when timeline reaches 0s .
• trigger: show lightbox when timeline reaches 10s AND canopenpopup == true.
• trigger: when timeline reaches 10.5s,  I set canopenpopup = false so that when I click later in the seekbar, the variable canopenpopup should prevent the lightbox from opening

But this doesn't work as expected, the triggers are always executed in the timeline order first.

So when I click at 15s, in the seekbar, the events are all executed from 0s to the clicked point :

• 0s: canopenpopup = true,
• 10s: lightbox can be shown so it pops in.
• 10,s: canopenpopup = false (anyway lightbox did already pop...)
• And the video keeps on playing in background... (other problem...)

Thank you.