Re: Selecting records from a SharePoint list
From the wording on the approval message. I don't think adding description and cost there are what you want. If either of those are coming from the value of LINE ITEMS and not the single EXPENSE ITEM, you would just have a list of results. Your email would look like:
Please review and take action below.
Description: bike tire, bike, replacement handlebars, speed pedals(which you're probably fine with)
Cost: 24, 400, 100, 70(which is not that helpful)
I think you should initialize 2 variables at the top of your flow under the trigger. One is an array titled "LineItemDescriptions", and another is a number titled "LineItemSum".
After getting your line items, do a loop on the returned items. Use action "Append to Array" to add each description to the variable. The other you can do a Set Variable action, reference itself + the current item cost. Then in your approval, you reference these variables instead of the values.