You have an error which might be informative. Your source attribute need to be a transform, which doesn’t seem to be the case here.
I’m not sure I’m following you, on what you want to do.
If you want for example use the distance to change the scale of your points, you can use the “AttributeOperation” node, with input attribute “Distance” and output attribute “$Scale”, meaning you will set, for each point, the value of Distance into your scale.
If you want to do other operations like Addition, there are other operations, look under Metadata in the palette.
1 Like