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Arrow signal error

Hi, Im trying to make an arrow indicator , but its not showing in the chart. Can anyone help ? //---- #property indicator_chart_window #property indicator_buffers 2 #property indicator_color1 Red #property indicator_color2 Green //---- double CrossUp[]; double CrossDown[]; double prevtime; double

void function return a value error - martingale

Hi Im trying to add a martingale on this Ea, but the void CalculateMartingale return a value :( Can someone help

Variable Lot 0.01 0.02 0.01 0.02...

Hi Im new in Mql4 and Im trying do this Variable Lot: Ordem 1 : 0.01 Ordem 2 : 0.02 Ordem 3 : 0.01 Ordem 4: 0.02 ...... Can anyone help me ? Tks