My EA keep increasing lot on the fisrt buy, instead of open new buy

 
I have an EA that open successive position, but instead of opening new position, it keep modifying the initial trade

For example :
. I open a but for 0.01
.i open an other buy instead of opening a new buy, it increase the lot size of the fisrt buy to 0.02

How to fix that 
 
Yerim Rayann Gon Diarra:
I have an EA that open successive position, but instead of opening new position, it keep modifying the initial trade

For example :
. I open a but for 0.01
.i open an other buy instead of opening a new buy, it increase the lot size of the fisrt buy to 0.02

How to fix that 
Use an Hedging account, not a Netting one like you are doing.
 
Alain Verleyen #:
Use an Hedging account, not a Netting one like you are doing.
So I have to open a new account