Final TDOS and Final TDOS $ is always zero and calculations are not working

Final TDOS and Final TDOS $ has to work as following:

If no regional or BSL override, use model value
If SKU has Regional override with no BSL override, use Regional override value
If SKU has Regional override with BSL override, use BSL override value
If SKU has BSL override with no regional override, use BSL override value

But now always 0.