Help converting an MT4 indicator from MQ4 to DLL

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I have a back testing program that only accepts indicators as DLL's. Does anyone know if it's possible to convert an MQ4 indicator to a DLL? If so, could you please tell me what I need to do in order to convert it?

Thanks

[Ray]

Which language/IDE do you intend to use to create the DLL?

What is the external back-testing program?

What function calls will it make to the DLL?

[taratata]

I am using the forex tester and I have the same issue as it accepts only .dll files to be added. How can I solve this issue?