@Surrogate:
Thank you very much for your Reply.
The formula CALLOUTTARGETREF()!... helps me to solve my issue

My Case:
I have a shape (Shape 1) which includes a text. This text is edited by shape data.
Now I want to insert a shape (Shape 2), which is compareable to a callout.
I move the connection Point to Shape1, so Shape 2 is associated with Shape 1.
After that Shape 2 Shows the text of Shape 1.
But if I move the Connection Point of Shape 2 to another Shape, the text is changed to the new associated shape....
I can make sure, that all shapes have the same property.
For Example:
=CALLOUTTARGETREF()!Prop.Name
With reagrds
MB-Ing.