Question about backtesting...

i am programing an EA, ai want to backtest it , but my problem is that i dont know how to make a quality backtesting.

I am using a demo account of Alpari Uk and my strategy tester givme an 25 % quality results.

how can i improve my quality of tests ?

(Sorry for my bad english , my native languageis spanish)

Thx!!!

i believe step 1 is having available m1 data. if you are testing on a higher timeframe and have not also downloaded m1 data then the quality score suffers

What nubcake said. You'll find a guide on how to do this here.