How does batch process "Change Name" action helps me to change the underlying filename of a document?

[cgrunenberg]

@halloleo

But somehow this does nothing (neither to the name nor to the underlying file). Then I tried using the File Name placeholder:

The name does not include the extension. The easiest way to fix this is by renaming the file. E.g. like this:

NOTE:
This uses the aliases to store the original name temporarily.