Workflow to capture document set version automatically

Hi,

I have a document library filled with over 800 document sets. I need a automatic versionning system for the library and I figured my solution was to use a custom Workflow.

So I created a workflow in Sharepoint Designer with only one step: "Capture a version of the document set". The Workflow is setup to start at any modification or creation in the list.

My problem is that every time the workflow run, it creates 10 identical versions of the same document set instead of 1. I tried capturing the version manually and it captures only one version (as it should).

Any idea?

Thanks in advance for your help!