Hi Raul,
Currently, the summary content cannot be generated from script. However, we have a corresponding suggestion in our database, and your request has increased its rating. Thank you.
Instead of using TestComplete's log, you can write some custom summary data to an external file during the test run. To make the file be associated with your test log, you can post a link to the summary file in the first test item's log via the Log.File method. You should probably try using Excel files - Excel provides some features for graphs, as far as I know.
