I wanted to use yEd for visualizing estimated workload and defined a new custom property. the property is bound to length and height of an object. So work packages with high costs will be displayed larger than those with low costs.
Do you think it's possible to sum the custom property values of linked objects?
I have work package "Programming: 3 days" and "documentation: 1 day".
They are linked to another object "total". I would like to have the total of "3" and "1" as property value in this object.