NPC selling items for items

[valessio 12]

Hello 
i would like to explain


Is it possible to create an NPC selling  items that does NOT require  YANG but   ACHIEVEMENT Points

exemple

player go to that "Special NPC"
and to be able to buy an item, for exemple a sword, he needs 10xAchievement POINTS   and not yang


How can i make such  alternative "Special NPC"   that sell items for other value different from yang?

[isDeath 1]

firstly you should active (( special shop & special currency))

 

and by quest you can make it as you want ((currency saved in mysql , pc.getqf , ((specific item)) , etc ))

[valessio 12]

Thank you , i m not an expert, is it possible to make what i would like to do, without using Souce? because i dont have it

Can you please show me the way to do that? a full tutorial? 

even that part 

firstly you should active (( special shop & special currency))

 

and by quest you can make it as you want ((currency saved in mysql , pc.getqf , ((specific item)) , etc ))

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I m not capable to understand how to do,