Tfs 1.0 Help with a function

[Xarly]

Hello guys i have one spell script but im having problems with it so i can't use rune because i got this error onCastSpell attempt to call a nil value stack traceback
exactly this line : local target = Tile(topos):getTopCreature() how i can fix this line?

we have another problem too on this line:
Tile(waterpos):getItemById(11450):transform(11030) < im getting attempt to index a nil value and i dont know why because the script its working perfect but im getting this error on this line
if some one can help! thanks in advance

 

[Limos]

Post the full script and the full error (so everything related to the error, you can make a screenshot).

 

[Xarly]

Post the full script and the full error (so everything related to the error, you can make a screenshot).

http://pastebin.com/mACYSTYj there is the script mate thanks for helping