Separate names with a comma.
Well, what do you even want to do? (I don't see a reason for the while and the sleep)
Also, please post this on the new forums.
Why don't you take a look at the Pocketmine source?
Also, please ask on the new forums from now on.
Please ask this on the new forums.
These forums are getting boring..
That simply sets the Stringtag as well.
Just add a StringTag for the custom name.
new StringTag("CustomName", "My custom chest")
He is adding him on join
Set it to 0 at death as well, since it's killstreak and not total kills