Making Villager Trade

Hi im trying to make a villager trade on pmmp. how can i achieve this?

Previous Attempts
Using https://github.com/many1337/VillagerTradeAPI
The trade got closed after i clicked the Paper

PHP:

//VillagerTradeAPI
$tags = new CompoundTag("Offers", [
         new ListTag("Recipes", [
         new CompoundTag("", [
         new ByteTag("rewardExp", 1),
         new IntTag("maxUses", mt_rand(2, 12)),
         new IntTag("uses", 0),
         Item::get(Item::PACKED_ICE, 0, 2)->nbtSerialize(-1, "buyA"),
         Item::get(Item::PAPER)->nbtSerialize(-1, "sell")
])


Using https://github.com/korado531m7/InventoryMenuAPI
I got a bug whenever i make a trade i got more item than it should be. example
I trade 2 Diamond for 1 Gold
I got 2 Gold and the 2 Diamond back[/PHP]

 

I already did a TradeAPI and realized that there is a bug in the transaction for the menu, you must cancel the Trade transaction via DataPacketReceiveEvent

 

TradeAPI is only for PM4 isnt it?
Is PM4 the master branch of PMMP?

 

I did not use TradeAPI pm4 I made a based on TradeUpdatePacket () with the code mirrored in one of the github, it is in the topics but I did not post the transaction part and my pc does not want to connect

 

https://forums.pmmp.io/threads/villager-trade.9554/

 

I got bug by using that. Ex: when i set recipe diamond => book . And open the trade window and i can put all thing on the ingredients slot and still got the result

 

I didn't find these bugs when I tested the trade and my code was simple but as I said above, it canceled the DataPacket received from the transaction

PHP:

$t = new Trade("Teste");
$t->addRecipe(Item::get(1), null, Item::get(2));
$t->send($player);