Unable to print message in Log Viewer

it does not work as I expected. In the html report it is logged as a teststep, but nothing is printed in the report.
In the xml report the statement is reported as succesful execution and at the same line the text of the logging is printed. So, where is the logging stored?

I would like to be able to print additional text in the html report, e.g. adding the test case description from my spreadsheet for easier reference.