Are generated Helm Charts possible?

Hi,

I generate the helm charts in the build process. What I get before the `chart-releaser-action` is a tgz with the final helm charts.
I tried to extract the files into `./charts` but what i get is `Nothing to do. No chart changes detected.`.

Does the chart-releaser check the history of the files in ./charts?
Is it possible to upload charts that aren't in the repository itself but are generated in the build process?