I need to apply color to an edge in prefuse by using source and target node id.

Here i am posting the code similar to what i have done for nodes...

Code:
ColorAction nEdges = new ColorAction(treeEdges.source=1,treeEgdes.target=2 VisualItem.STROKECOLOR);
	nEdges.setDefaultColor(ColorLib.red(100));

here i assumed source node=1 and target node=2.But i got error.Here the entry in XML is
Code:
<edge
...