TFS 1.2 .NPC Question

[afg94]

Hello im trying to make that an npc gives me a container with items inside for a quest, im using the real cipsoft npc from 7.7, the ones that are in .npc files, here is an example.

# GIMUD - Graphical Interface Multi User Dungeon
# albert.npc: Datenbank für den Heiler Albert

Name = "Albert"
Sex = male
Race = 1
Outfit = (130,78-0-49-95)
Home = [33312,31762,7]
Radius = 3
GoStrength = 10

Behaviour = {
ADDRESS,"hello$",!      -> "Welcome in my humble hut, %N."
ADDRESS,"hi$",!         -> *
ADDRESS,!               -> Idle
BUSY,"hello$",!         -> "Please wait a moment, %N.", Queue
BUSY,"hi$",!            -> *
BUSY,"heal$",Burning>0 -> "You are burning. I will help you.", Burning(0,0), EffectOpp(15)
BUSY,"heal$",Poison>0  -> "You are poisoned. I will help you.", Poison(0,0), EffectOpp(14)
BUSY,"heal$",HP<40     -> "You are looking really bad. Let me heal your wounds.", HP=40, EffectOpp(13)
BUSY,"heal$"           -> "You aren't looking really bad. Sorry, I can't help you."
BUSY,!                  -> NOP
VANISH,!                -> "If you are heavily wounded or poisoned, feel free to return for a healing."

"bye"            -> "Good bye, %N!", Idle
"job"            -> "I am a healer."
"name"           -> "My Name is Albert Fibulanian."
"tibia"          -> "Tibia is a world big enough for everyone. I wish people would realize that."
"thais"          -> "The sinful city of Thais is a monument of corruption and murder. I am glad I left for Edron and thank the gods every day for this isle."
"edron"          -> *
"god"            -> "The gods of good take care of us."
"king"           -> "The king does much to enhance the life of his people, but he could do more."
"tibianus"       -> *
"army"           -> "I dream of times which see no need for armies or warriors."
"banor"          -> *
"ferumbras"      -> "The fallen one is a perfect example where evil leads us to."
"excalibug"      -> "It's only another instrument of pain and destruction."
"news"           -> "I have only news about weather, taxes, and harvests. I heared nothing that might interest a traveller like you."
"daniel"         -> "I healed his wounds, but nothing can heal his soul after the betrayal of some of his knightly brethren."
"kaine"          -> "Another victim of his own ambitions. I mourn for his soul."

"heal$",Burning>0 -> "You are burning. I will help you.", Burning(0,0), EffectOpp(15)
"heal$",Poison>0  -> "You are poisoned. I will help you.", Poison(0,0), EffectOpp(14)
"heal$",HP<40     -> "You are looking really bad. Let me heal your wounds.", HP=40, EffectOpp(13)
"heal$"           -> "You aren't looking really bad. Sorry, I can't help you."
"time"           -> "Now, it is %T."
}

I know how to add items with the npcs, but not inside a container, I can do it with actions with something like this:

local bp = player:addItem()
bp:addItem()

but not directly with the npcs, someone told me I need to edit the source but im not really sure, and if I need to do that, could someone help me telling me which source files I have to take a look at?
Thanks for you time