HCM - call standard WD into custom POWL

Hello,

we developed a custom POWL, with a custom feederer, that extracts employee appraisals. Once results are taken out in ALV, if we select one row and we click on EDIT or VIEW, then nothing happens. What we would expect in this case is that standard webdynpro with appraisal document is triggered.

Does anybody have a hint?

Thank,
Daniele