Copy signal different lot from master account

[anie cute]

Dear All, I buy a signal from this MQL5 but how come when the master trade lot 0.04 but in my account only trade lot 0.02 ?? How to make my account follow exactly lot some with master account ? appreciated some help here, thanks

[Sergey Golubev]

This question was asked many times.
And the replies were posted on FAQ here https://www.mql5.com/en/forum/10773 (read first post of the thread).

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To make it shorter - 

Your lot size are selected automatically by the system, and it depends on your deposit, on the leverage of your trading account and more.
read this small thread for more information: 

How to Select a Deal Volume