Hi Jasmine,
Could you please confirm us, that you want to update the value in node addInfo property when you change the value in HTML table content. If yes, then by default , in the diagram, we have only property change support for the diagram properties. We do not have property change support for the private and HTML properties. So if you change any value in HTML content means then that value does not gets reflected in the node addInfo property. However, get the HTML element from the DOM and read those table values and assign those values to the node addInfo description values. So that node addInfo value gets same as HTML content value.
Regards
Aravind Ravi