Search & Replace parts of Shape Data String

[AnotherNoone]

Hi, following problem:
Many shapes have a ShapeData called prop.name
With the Content
"Test XYZ 1" "Test XYZ 2" ... with numbers up to ten or sth.


And all i want to do is replace the XYZ in all of them with ABC using search and Replace, and not clicking on every single one of them.
Is there any quick and easy way, or do i need to use VBA?