Power Automate and Arrays

[Farscape2020]

I have created a form that requires people to upload a file for documentation. I would like to rename and save that form to specific folder on my OneDrive. I am able to save the file to my OneDrive but I am having difficulty renaming the file. In Power Automate, I have successfully parsed the data (see below):

After renaming the file, I would like to add the extension to the new file name. To isolate the extension, I am trying to use the initializeExtension action using the formula:

last(split(item()['link'], '.'))​

When I run the flow, I get the following error at this step:

"Unable to process template language expressions in action 'initializeExtension' inputs at line '0' and column '0': 'The template language expression 'last(split(item()['link'], '.'))' cannot be evaluated because property 'link' cannot be selected. Please see Reference guide for expression functions - Azure Logic Apps for usage details.'."

Would someone be able to help me understand why I am getting this error and how I can correct it.

 

[ExcelToDAX]

I don't see the reason for you to extract the file name in a variable. You can just utilize the OneDrive's "Create file" API call. You just need to get the file content from the URL in your above JSON output.