O.k. I've been playing for awhile now and a few of my families have over a million dollars but I just noticed the other day that when i bought the cooking book for my pesto sauce creator it said that she made some money but in actuality she didnt. the money didnt change and I checked her progress and the level didnt go up either. So my question is does it stop working after you reach a certain level. I think she was at level seven, but on one of my families where the man was on level one and i gave him one of the books it gave him a promotion. Exactly how does this work?