Do you have any particular reason to want 10000 bars?
You can easily change the limit for yourself.
Open the "User Files\MT4 Files\MQL\Forexsb.com\ActionTrade4.mqh" file and go to line 485.
Change the maxBars variable from 3000 to 10000.
If you want to make the setting manual, you can make the following two changes:
1. Make the Max_Data_Bars option visible in the Expert's options.
Change line 60 of file "User Files\MT4 Files\MQL\FSB_Expert_MT4.mq4 from int Max_Data_Bars=0; to:
extern int Max_Data_Bars=1000; // Maximum Data Bars
2. Disable the automatic calculation of the bars necessary.
Mark line 305 in the "int ActionTrade4::OnInit()" method in ActionTrade4.mqh as a comment.
All these changes are same for the MT5 files.