I do not understand the problem
Total mark and sofistik quantity are correct in properties, multiplier is correct, but in schedule number is Total mark * quatity.
It happens only for certain types of rebar sets (variable and free form)
Thank you.
Salutare,
Imi pare rau ca nu am vazut mesajul tau pana acum. 
I will continue in english so everyone will understand.
In one of my linkedin posts I explained some stuffs about how the Revit Schedules work. Anyway, that was slightly other topic back then.
You mentioning that for variable bars it is not working properly is an important information. The parameter SOFiSTiK_Mark_Total_Quantity has already in it the entire reinforcement of a Mark and you should not apply any calculation for it.
Sper sa-ti fie cu folos!