If you want to clear the item drops, use this.

Code (Skript):

1. on death:
2. clear drops

If you want to keep inventory, use the command /gamerule keepInventory true

EDIT: If you want to add the list variable to the player's inventory to respawn with all the inventory, you may use on respawn event to add the player's inventory to the inventory, if you add when dead, it won't work

 

It's probably because when a player's inventory if full, Skript WILL try to give the armor, but since all the items from the 4x9 inventory are back in the player's inventory, it won't give the items because the player's inventory is filled back up again and Skript can't add items to a full inventory. You can try removing the armor from the drops, then setting the armor of the player when it's respawned so that it doesn't add to the 4x9 inventory, but to the actual armor slots

 

Won't that "clear drops" effect destroy all drops?

 

Yes, that was I said. Isn't it?

 

No you said it would cancel the drops, in the same way "keepInventory" would. Maybe i misunderstood you. As far as i know, "clear drops" will destroy all drops rather than cancelling the drops.

 

Oops! Sorry, my head, what a fail!

 

on death:
set {level::%player%} to player's level

on respawn:
set player's level to {level::%player%}
delete {level::%player%} # This is for saving fewer variables as possible to improve performance

@cvcv789789