Am i wrong or is the "Lektorek" program wrong?

Im using this program called "Lektorek" from The university of Pittsburg polish course.

But the program keeps telling me that my answer is wrong, but I really think my answer is right.

The question im supposed to answer is:
Jak ci się podoba ten płaszcz?

My answer is:
Wolę jakiś inny płaszcz.

The program suggests as a right answer:
Wolę jakiegoś innego płaszcz.

I really think my answer is the right one ,hope someone can sort this out for me :)

The program is crap.

Telling it straight again I see G. Seems like there may be a gap in the market for you to explot

I am right because the "jakiegoś innego" is for living male objects right? But since "płaszcz" is a dead object is "jakiś inny"?

You are right, the "biernik" case it the one to use here. With male persons it would be "dopełniacz" (genitive)

Wolę jakiegoś innego faceta.

Wolę jakiegoś innego płaszcz. - it's wrong in 2 ways even: 1/ jakiś inny, 2/ no concordance of cases (jakiegoś innego is in genitive, płaszcz in "biernik" - I forgot how you call biernik in English)

biernik = accusative :)

Thanks for the help :)

Maybe the nie was left out and it was meaning the genetive case for instance nie mam jakiegos plaszcza.