Export Filename variables from documentation unknown

[Firehold]

Hey,

i am at Version 3.64.0.0 and tried to use the variables for export filenames: ${EXPORT_COUNT} and ${FILE_EXPORT_COUNT}

But i get the Error:
ReferenceError: EXPORT_COUNT is not defined
ReferenceError: FILE_EXPORT_COUNT is not defined

After the label "Variables:" i clicked on the round questionmark symbol, i got redirected to the website:
https://github.com/mifi/lossless-cut/blob/master/import-export.md#customising-exported-file-names
With the content:

Export

This has been moved to the documentation (Custom exported file names).

There i found the Variables ${EXPORT_COUNT} and ${FILE_EXPORT_COUNT}

Am i doing something wrong?