How to Use the Step Bar custom widget

Hi Community

Is there any one who has used the Step Bar custom widget successfully. When I tried to Import it in UI designer , I got the error that

Incorrect zip structure.

The artifact has not been imported.

Check that the zip file structure matches a standard UI Designer export.

 

Can someone share a page where they have used this Widget ?? Please also mention the Bonita Version used ??

 

Thanks