Line robot

I have an indicator that creates and moves an object - horizontal line - on the chart. Line can have 3 different colors meaning the current direction of market movement: 1. green - up trend, 2. red - down trend, 3. yellow - no trend.

The algorithm of robot:

On every tick robot checks the position and color of the line:

- when line is green and current price is below the line robot places a buy stop order at the price equal to current line position

- when line is red and current price is above the line robot places a sell stop order at the price equal to current line position

If the line moves robot should move the not yet executed stop order to the current price of the line.

If the line changes color when there is an active stop order this order should be cancelled. For example if robot placed a buy stop and before the order was executed line changed color from green to yellow or red robot should cancel order and wait for a new signal.

TP and SL levels would be external parameters in points.

Robot should place only one position at a time.