Display a dynamic text in an ArcGIS Pro map series answering a request

[SIGAME45]

Hi !

In a map serie, I want to display a dynamic text answering a request.

For the example, my polygon shapefile has 4 attributes and they can be filled like : 

In each page of my map serie, I want to read the information "att1" of each objectID (easy).

But, if the objectID is not "P" in the att1, I want to read attE or attG.

I hope I'm clear 🙂

Thanks !!!!