Need Programmer to Make Some Changes to EA Quickly

Need Programmer to Make Some Changes to EA lot size function.

I need to make new lot size option - based on percentage of account equity and this should be variable : from 1% to 50% of the account equity.

Lot size must be related to stop loss distance from buy price.   this video explains how it should be done https://www.youtube.com/watch?v=0csdTrtawYs

I have attached position size calculator - this option can be built on this.

Position Size Calculator (MetaTrader indicator) tells you how many lots to trade based on:

• Given entry and stop-loss levels
• Risk tolerance
• Account size (balance, equity, or even your savings account)
• Account currency
• Price of the quote currency (when different from account currency)

Its main features include:

• The calculation inputs and results are displayed inside a graphical panel.
• The panel can be moved freely across the chart.
• You can easily close or minimize it.
• All calculation parameters can be adjusted inside the panel in one or two mouse clicks.
• Entry, stop-loss, and take-profit lines can be dragged directly on the chart.
• If take-profit is given, the calculator shows the potential reward level and the risk-to-reward ratio.
• Supports pending and instant orders (easy switching).
• You can see current and potential risk profile.
• Information about required margin is available in a separate tab.
• Calculator can show the maximum position size based on available margin.
• You can enter a custom leverage to calculate position margin based on it.
• Detailed swaps (rollover interest) information is available in a separate tab.
• Optional spread display.
• Optional display of the pip value for the calculated position size.
• The indicator automatically saves and loads its inputs on timeframe change or platform restart, preserving your configuration efforts.
• Custom profiles restore panel's location, status, and settings.
• Completely free and open-source project.
• Does not require any DLL imports.
• Can be used together with a trading script (PSC-Trader) to make it easy for traders to open positions based on the calculations.