Lua Stackpos 255 but no moveable item

[Aragornik]

Hello, Can have question for Stack pos. How can I use stack pos to TOP-but no moveable item. Stackpos 255 don`t work. Now i must use stack pos 1,2,3 etc.

I find this in google:
Stackpos 0 = Ground tile.
Stackpos 1 = Top item.
Stackpos 2 = Item below top item.
(And so on until 252)
Stackpos 253 = Top creature.
Stackpos 254 = Field item.
Stackpos 255 = Top item. (moveable/creature)

 

[Sonical]

Use getTileItemById