In the first approximation you may try a simple workaround, which converts the offline chart to a regular TF. Either manually or there are some scripts to help you with it ( e. g. backtest_helper.ex4)
Most artificial charts have high degree of signal distortion by definition, so trustworthy of tests results with the above method may be weak. To get a more trustful result you may use the rather tricky Birt's method of replacing the fxt file, which has been discussed here quite often.
I'm having troubles while using the script... I'm running the backtest_helper script and selecting "test" as Test_Server_Name" amd a 0 Spread. Before running it, I'm allowing the DLL imports. This screen appears:
Then I click Yes and write "test" in the server of the next window...
Sometimes MT4 closes, other times does nothing...
Can your help me see where am I wrong?
Thank you, very much, I'll check this