The formatting isn’t visible in design time (in Report Builder, Report Manager etc). Instead, you will see the HTML text as is.
The Aspose.PDF for Reporting Services rendering extension can understand and properly format HTML code in textboxes. The default PDF renderer of RS does not so.
Date Type: Boolean
Values supported: True, False (default)
If you want to set this parameter in Report Designer, the data type should be 'Boolean'.
Currently Aspose.PDF for Reporting Services does not support all HTML tags.