How to re-use blend crop

If you want to drop it into another graph with an input that you can feed with a float 4 value then build it like this, which uses the ability to add input :

a. In the blend node add an input and set it to Float 4 , I called it #crop area

b. Set your cropping area to use that node input value

c. Add an input node and set that to Float 4 and label that Crop area and set the defaults that you want to use if it is not connected

d. I also added an output node

e. Save the graph

To use it in another graph just drag it in and drive that input value as you require - I've shown it connected to a simple input value here but you could drive with functions through a value processor node as needed

Dave