Need add a custom indicator to my EA

Tether line Ea

SETTING :

Buy and sell : position 1 for buy and 1 for sell 

LOT: 0.01

MARTINGALE :   0.1, 0.12 

DOUBLE MARTINGALE : 0.1, 0.2

Tether line length: 190 ( KEEP NOTED I CAN CHANGE THE AMPLITUDE AND IT MUST WORK ON ALL SETTING )

BREAKEVEN : 90

STP : 200

TK : 300

TRAILING STOP : START FROM 200

Tether line when green CANDLE cross it open on crossing line upward buy position with tk , stp, tr.

Tether line when red CANDLE  cross it open on crossing line downward sell position with tk , stp, tr.

Only one position for buy and sell can be opened till the stoploss dnt hit