How to convert SL price to StopLevel for CMoneyFixedRisk

[ILIAS BALASIS]

I am trying to make use of CMoneyFixedRisk class but it seems to be asking for a "StopLevel" which is expressed in "PriceLevelUnit" while my SL is calculated as a price value.

Is there a way to convert my SL price and have the money management class choose the correct lot size ?