Hey, I posted the same question about a month ago & I got no reply.
After a bit of looking around I found the parts that you need
1. 2 sill strips, this is stuck to your sill.
2. 10 sill clips, that stick to the moulding & to the sill strips.
These parts can only be purchased from a VW dealership
Hope this helps (mine will be going on when I get a chance)