The Reports tool I am talking about is the one in Utilities and in the Explorer and not the Horizontal Geometry report.

Currently, this tool enables only to report the properties (such as the length, direction and etc.) of the linear elements and not the complex element.

The workaround for this is to export the Horizontal Geometry report into an Excel file and place this table using that excel file. Although this seems like a workaround, this will take additional step each time that the complex element will be modified since it will not automatically change the table for every modification in the complex element. Additionally, since the excel file is linked to a certain location, it will probably make ORD slow, depending on where that excel file is stored.