Hi @PoomCarrier ,
Here are some key points to remember:
1.You can use letters (a-z, A-Z), numbers (0-9), underscores (_), hyphens (-), periods (.), and spaces (but using spaces is generally not recommended).
2.Special characters like brackets ([]) or symbols (@, #, $) are generally not allowed in filenames within Excel. **Dynamic File Names:** * PAD allows you to create dynamic file names using variables and expressions. This is particularly helpful when you need to automate the naming process based on specific data. * You can use variables created within your flow or system variables to incorporate dynamic elements like timestamps, unique identifiers, or data extracted from your workflow. **Examples of File Name Setups:** * **Static Name:** "MyReport.xlsx" (Simple and straightforward) * **Dynamic Name with Date:** "SalesReport_$(Now:yyyyMMdd).xlsx" (Uses the current date in YYYYMMDD format)
After getting the Current Date and Time,you convert it into Custom form as shown in below image.

While saving excel you can use it as below.

(Note:- if you got your solution you can mark as solution and gives kudos)
Thanks & Regards
Vishnu Reddy