How to Display Total Expenses Value in Saved Search

Custom record for retrieving values in search save expense tab

I would like to get the total value of the Expense tab in a saved search of the purchase order to know how much was spent for each transaction, but the saved search item does not exist. (If you know of one, please let me know)

Is it possible instead to create a custom record that would automatically calculate the Expense tab total and display it in the Body field?

Using the image as an example, the total value of the Expense tab is "30,000", so I would like to add a custom field that would automatically display "30,000" in the Body field.