Upgrading multiple files at once issue

I plagiarized the python code in the save document node, and the open document code mentioned here:

to work with an array of documents and paths…

import clr

# Add references to RevitAPI and RevitServices
clr.AddReference('RevitAPI')
clr.AddReference('RevitServices')

# Import necessary modules
from RevitServices.Persistence import DocumentManager
from Autodesk.Revit.DB import Document, ModelPathUtils, OpenOptions, DetachFromCentralOption, SaveAsOptions

# Input parameters
document_paths = IN[0]  # List of document file paths
save_paths = IN[1]  # List of target save paths

def open_and_save_documents(document_paths, save_paths):
    result = []
    
    for doc_path, save_path in zip(document_paths, save_paths):
        # Open the document
        doc = DocumentManager.Instance.CurrentDBDocument
        app = doc.Application
        model_path = ModelPathUtils.ConvertUserVisiblePathToModelPath(doc_path)
        
        open_options = OpenOptions()
        open_options.DetachFromCentralOption = DetachFromCentralOption.DetachAndPreserveWorksets
        
        doc_on_disk = app.OpenDocumentFile(model_path, open_options)
        
        # Save the document
        path_to_save = save_path  # No extension added
        save_options = SaveAsOptions()
        save_options.OverwriteExistingFile = True
        
        try:
            doc_on_disk.SaveAs(path_to_save, save_options)
            result.append((True, doc_on_disk))

        except:
            result.append((False, doc_on_disk))
    
    return result

# Call the function to open and save documents
result = open_and_save_documents(document_paths, save_paths)

# Output the results
OUT = result