revise my script 6

i have a trading script that work between crypto exchanges with nodejs, i need some revision on it. - Adjustable order size: coins have a constant Ordersize value this should be changed according to coin balance,if coin balance lowers ordersize will be lowered according to it. - Btrk exchange withdraw: this exchange doesnt have api supported withdraw option so we will web scrap from it to send withdraw then confirm mail with gmail nodejs api.