[amibroker] please write this trailing stoploss code thankyou

[rink <boyrinku@xxxxxxxxxxx>]

 Hello all 
i want to move stoploss on r(risk) based if my position reach at profit 
of 2r then
automatically my stop should trail at cost
 my risk is 2%  instance if i buy abc at 100 with sl of 98(risk 2 point 
so r is 2), if abc goes at 104(profit of 4 point so 2r gain) then
stoploss should automatically trail at 100rs basic concept is i don't 
have to loss money(if position revers)
 if once i get 2r profit
thank you for your help


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