C# ATAS Order Flow Indicator

I need a C# developer who knows the ATAS platform to build a lightweight order-flow indicator that works tick-by-tick. The logic is straightforward:

• Every incoming tick compares Bid – Ask volume as well as the current bar’s OHLC differences.

• The resulting value drives a simple visual cue: an arrow plotted above the bar for bullish pressure, below the bar for bearish pressure.

Key requirements

• Runs on both real-time and historical data feeds already available in ATAS.

• User-editable inputs in the indicator menu (e.g., arrow offset, colour, minimum delta threshold).

• Optional sound alert fired on each new arrow.

• Clean, well-commented C# code that compiles in the latest ATAS indicator SDK.

This is meant to be a basic yet reliable tool, not a full analytics suite. If you have prior ATAS indicator experience, please mention a sample or short clip of your work.