So a tip about the Silver/Mirian cheat
I didn't use the trainer for this one but managed to give myself 500K. I tried just using Cheat Engine(6.6) and went into the market menu, searched the value, spend some, narrowed the results in CE and then changed it to 500,000. It didn't work.
So I disabled my network connection. Went into inventory and changed the value to 500000 again. This worked, and when I went back online it stayed at 500,000
Hope this works for others