Save multiple revit models, each with unique ProjectInfo parameters

In summary I am trying to create multiple revit models, each with unique project parmeters driven by an excel spreadsheet. I am trying to speed up project setup on large jobs with multiple models.

My approach has been to create a .csv containing all the project parameters > load this into dynamo > Update parameters > save the document.

This works fine if i have only one list of parameters, but if i want to input multiple lists of parameters i end up with multple revit models all containing the same parameters.
So my question is, how do I change my nodes so that the dynamo script saves after each update of the project parameters.

My current dynamo Script:

Any further info required please let me know. Thanks in advance for anyone willing to help.

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