I need someone to modify an existing EA to allow for martingale trades ( having 3 levels of risks) + add possibility for EA to add lot sizes depending on your account size

i have an existing EA that takes trades when you reach a preset value of Demarker  ( or RSI , or MACD, or combination of those 3) 

it buys at oversold zones

it sells at overbought zones.

I currently have an option to take more than one trade but it is not a typical martingale style. it just takes the same trade every certain distance that you set.

i need someone to modify that and let EA make martingale trades with a specific multiplier that i will give you ( also having 3 levels of risks for the user to choose from ) + also to add the possibility for the EA to modify the lot sizes as your account grows or if for example you withdrew some money from the account or even lost some money. i will also give you the recommended lot sizes based on the account balance.