In Creo Illustrate, we can easily use object attribute values to create custom balloons. But if we modify this value withing the CAD authoring tool (ie Creo Parametric for instance), the updated pvz file which is used as the illustration source can be generated and the attribute value will be updated too.
Creo Illustrate detect the modification of the source and ask permission to update the data. We can see on the object attributes that the new value is updated but the balloon is not updated.
This idea simply aim at allowing the associativity between the value and the balloon.