enable ddl's in strategy test

Trying to backtest EA with dll calls and get the error

2008.05.28 19:52:10 2007.05.10 00:00 MA Martingale v3.33 GBPUSD,M30: dll calls are not allowed; 'user32.dll'-'GetDC'

Can't find how to enable ddl's in strategy tester

thanks