To put it into context, I am part of a team using configuration parameters defined at project level. Each project has a number of build configurations that use these configuration parameters.The build configurations are setup to trigger one after the other using the dependencies feature of TeamCity. As such if you run the top level build configuration and it completes successfully, the second one runs and so on.
Getting back to my question, I would like to automatically change the values for the configuration parameters that are defined at project level. Afterward I would trigger the top level build which should pick up the updated configuration parameter. I wonder if there is a REST api to allow changing configuration parameters at the project level. The REST API documentation only shows API allowing configuration parameter changes at build configuration level.