override how to override textures (icons) without mod

[elislavkat]

im unpacked 

"C:\Program Files (x86)\Steam\steamapps\common\ProjectZomboid\media\texturepacks\UI2.pack"

and placed it like 

"C:\Program Files (x86)\Steam\steamapps\common\ProjectZomboid\media\texturepacks\UI21\Item_CreditCard.png"
"C:\Program Files (x86)\Steam\steamapps\common\ProjectZomboid\media\texturepacks\original\Item_CreditCard.png"
"C:\Program Files (x86)\Steam\steamapps\common\ProjectZomboid\media\texturepacks\UI2\UI20\Item_CreditCard.png"
"C:\Program Files (x86)\Steam\steamapps\common\ProjectZomboid\media\texturepacks\UI2\UI21\Item_CreditCard.png"
"C:\Program Files (x86)\Steam\steamapps\common\ProjectZomboid\media\texturepacks\UI20\Item_CreditCard.png"

 

and no one of this  doesn't changed icon in game. 

pls tell me how?