you may have a look at this (by import Tersus project file)
The "b.png" file was in the [project]\web\images\b.png folder
The <Path> should be received value "images/XXX.xxx" no need web (web usually contains the web site files). "images/b.png" means the file "\web\images\b.png"
The element name could be everything, only make sure the Value to be the path then flow into <Path>.
You could see the regular using methods written by David in
And the Example in Tersus shows a lot of using model methods :)
I learnt much from Example and Tutorials :)
For best results, use the Firefox browser..