i want to model a simple relationship (polyline connection) between 2
nodes of the same type which (on double-click) opens a sub-diagram. I have
already realized to open a sub-diagram by double-clicking a node. Now i'd
like to do the same procedure with a polyline connection which is
represented as a Gen Link Element in *.gmfgen file. But the
OpenDiagramBehaviour doesn't take any effect. Can anyone help please ?