hi.
whenever i go to a merchant if he has 2 or more of the items and i click it i get the whole stock rather than 1
EXAMPLE
1.trader has 10 potions
2.i click it and it acts as if im buying 10 rather than 1
everything is like that,please help!

This is an optional function of the Code Patch.
It allows you to grab the entire stack of items, instead of having to select how many you want. (this makes it faster)

Hold the Shift key on your keyboard while you select the item. This will bring up the traditional slider that lets you select how many items you want.

I suggest you actually read the functions of the Code Patch before selecting which functions of it you want to install. Some change the game in new way, like this one.
All are optional, so if you don't like one, just de-select it.