I’ trying to build a Petri Net with Cytoscape.js, using Dagre.js layout and compound nodes for representing places witch in turns are subnets. I’ using Expand-Collapse extension (Dagre layout) , starting with an overall collapsed network. As the net evolve, I need to update data on every node, including children of collapsed nodes witch users may decide to expand or not . Here is the issue: I’ not able to select nodes inside collapsed ones nor I can test with IsParent() or any other function applying to compound nodes including slector like “node > node”. Any idea ? Thanks.