Get and save slot

Hey. Who can help with this task : Take the first slot of the bag with some sort of object, remember his name and number , and remove from the bag . Check another player first slot . If they are the same in number and title , then also remove the object from the bag and doubled the number of items .

 

Not entirely sure what you are asking for here.
You want to check if two players have the same item and amount in the first slot and if they do double them?

 

1) Player inputs /example, and he lost one slot out of the bag.
2) ID and the number of the object is recorded.
3) The second player inputs /example2
4) If the ID and the number = recorded, the first slot of the second player lost too, and recorded number of the object(not id) *2.
Sorry for my bad english