How to read the new position of nodes after drag

[ak4zh]

When the user moves a node its new position is not getting updated back In the input JSON data. I have tried to bind it and use stores, but it seems the data update is not supported.

This feature is helpful because I want to render back the same flowchart that the user has customized when he visits the app next time.

I am unable to find this info in the docs.