Export a trx file on tests execution build step

Hello everyone!

We are trying to generate a trx file with the result of our unit tests. We are using the MSTest engine, and we put a value on the field "Results file:" (this location is public for everyone on our network) so any user can write or modify anything there). On the build log, I see the generation of this file on the tem directory of TeamCity, but it never goes from there to our network adress... Anyone can help? We are using TeamCity 9.1.