Create a martingale ea based on a custom indicator

The ea has two operating mode, user can select either mode.

Mode A:  Buy whenever custom indicator gives buy arrow, exit all buy position when the custom indicator give the first sell arrow, or exit all buy positions at      preselected profit or loss in dollar amount.  follow the buy position group with a trailing stop in total dollar amount ( trailing start dollar amount and trailing step in dollar amount are selectable)  

              Sell whenever custom indicator gives sell arrow, exit all sell positions when the custom indicator gives the first buy arrow, or exit all sell positions at preselected profit or loss in dollar amount.  follow the sell position group with a trailing stop in total dollar amount.

Mode B:

When the custom indicator give the first buy arrow, enter long direction martingale only. design a lot increase scheme ( linear or exponential increase with adjustable parameter to control the speed of lot increase) to add buy positions based on grid with adjustable pip space.  When the custom indicator gives the first sell arrow, exit all buy positions. or exit all buy positions at preselected profit or loss in dollar amount.  follow the buy position group with a trailing stop in total dollar amount.

When the custom indicator give the first sell arrow, enter short direction martingale only. design a lot increase scheme ( linear or exponential increase with adjustable parameter to control the speed of lot increase) to add short positions based on grid with adjustable pip space.  When the custom indicator gives the first buy arrow, exit all short positions. or exit all short positions at preselected profit or loss in dollar amount. follow the sell position group with a trailing stop in total dollar amount.