While you don't want to use scripts, I think you will have to use a driver to achieve what you want. Drivers can be a lot simpler than python scripts.
I'm thinking you want to alter the X value of the translate node. With your cursor over the X value, either press D or right click and select Add Driver, the value will then be highlighted in purple. The driver details are available in the graph editor, change F-Curve to Drivers in the graph editor header and select the value on the left, press N to show the properties panel on the right.
In this example the variable is named
getVal and it will be equal to the X location of the object called Sphere. The scripted expression is set to
getVal * 10, which means the X value of the translate node will be set to the Sphere's X location times 10.