Creating a Circle shaped bar

Hi, I want to create a circle shaped bar.

I followed the information provided in this topic

I some how cannot manage to create what he created.

I think I followed exactly what RyanB said.

It shows nothing with a value below 1

With 2 it shows this

And it got really high diminishing returns.

it is 50% with 2 but to reach 100%, i have to use 100+