Long texts in BW Web Templates - Concatenate independent infoobjects

Hi All,

We have a requirement where we need to display a long text field (Length - 240) by concatenating 4 different infoobjects in a BW report / web template.

We have an existing approach to do this by embedding an custom ABAP class in the web template. The custom Z class inherits from the standard class CL_RSR_WWW_MODIFY_TABLE and works well in concatenating 4 attributes of a master data object.

New requirement is to display a similar length field but this concatenating infoobjects which are not attributes of any master data. The custom class inheriting the above standard class does not allow us to add new parameters, where we can include multiple infoobjects.

Please help in this regard.