How Dungeons (drops) work

Hi. Can explain somebody how drops in dungeon work ?
I remade a dungeon, simple one, but drop doesen't work. :love:

I modified the drops in most of dungeons on my test server, care to explain what exactly is not working?

item drop on mobs .... dont working can u explain pls exactly what line i need to change /add ?

and if is possible to add 20 core or more for example in chaos arena last boss

problem solve thx to all!

As i solved my problem, i request to close this.
Thank you.

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