Auto looting closing fast the corpse

I'm using these hotkey:

auto 700 | listas 'Monster Looter' | if [$target.hppc == 0 && $open == 0] {set $open 1 | wait 400 | usegroundxyz $mx $my $mz}
Persistent:

auto 100 | dontlist | if [$target.hppc < 30 && istargeting && $target.posx > 1 && $target.isonscreen 1]{set $mx $target.posx | set $my $target.posy | set $mz $target.posz | set $open 0}
When I am botting and I kill a monster, it opens the corpse and close fast. I wanna know how can I do to open the corpse and all bags/backpacks, wait like 6 seconds and close the corpse. After that, check the other corpse that I killed.

I'm losing so many important items because it is happening. I don't know how to fix it.

Thanks!