Get/Set asset's Source File path via BP (4.26)

Hey guys, I’m trying to read the selected assets Source File paths into PrintString and then replace them to a destination of my own. 4.26 contains a new BP node to do that:

But for some reason, I can’t get ScriptedAddFilename to work no matter what I try. Whatever I try to cast to it, the cast always fails. If somebody managed to do this successfully, I’d really appreciate some help.