Yeah - same with me!
I didn't think about searching through the inventory for already used, but hidden items.
I confess, I didn't work very hard on this one, because there are currently soo many beautiful games to play (That's the reason, why I didn't post it, when I have been at this point). :
You solved our prob!
Gratulation and thx for sharing it here, Marquillin.
Not to forget: Welcome in the forum!