How to give an effect to a player when an item is in a container

[CibusSimia]

Hi. im trying to make a container that when it has an item in it it will give a potion effect to a player in a radius. im using the detectandSendChanges overide but i cant seem to access player. and when i add player to the container itself it wont register. do i have to make a new class to detect what is in the container

 

Container: https://pastebin.com/CDc68HJn

 

Registry: https://pastebin.com/Q6FNAXaW

[Draco18s]

Containers don't exist unless the player is actively looking at it. You want your TileEntity to generate the effect.

[CibusSimia]

alright how do i do that then? i dont see any method. read checklootandread checklootandright all dont seem to work