[SCRIPT] Adding 3 Items to Acid Container then Pickup

[heyitsrobert97]

Hi, I am Pretty Good At Scripting Now But Don't Know How to Put Multiple Items In to One Entitie then It Allowing Me to Use a Jar to Pick Up Acid.

I want to get 3 bottles of liquid named 'chemical_1', 'chemical_2', 'chemical_3' and Use Them On 'acidcontainer'. and once all 3 used on the container be able to use 'empty_jar' on the container to pickup acid.
I know how to use the AddUseItemCallback and That Stuff I Just Need To Know How To Add all 3 jars then it activate the AddUseItemCallback for 'empty_jar'.
Any Help please