Hello Karapetyan ,
Indigo has an options that are passed to the InChI plugin:
indigo.setOption("inchi-options", "/DoNotAddH /SUU /SLUUD")
You can pass any other options.
I found that InChI has a strange requirement to pass options with a '/' prefix on Windows, and with a '-' prefix on Linux. So if you are working on Linux you have to do the following:
indigo.setOption("inchi-options", "-DoNotAddH -SUU -SLUUD")
In the next version we are going to change the option string automatically.
With best regards,
Mikhail