As PBP manual states, page 35. It is possible to write word-size variables into word size array, using arraywrite statement. There is even an example.

stored VAR WORD[8]
ARRAYWRITE stored, [1260,2500,10000,0,0,100,200,400]
However, it does not works! When I try to add it into my code (which is empty and has only variable and pin defines), I'm getting the following error:

Only BYTE datatype with constant offset allowed.

The chip is 16F886 and no other code is loaded.

Any ideas?