I hvae two SP List (a detail and summary list). Both lists are population at the same time via a flow taking information from a form. Once it is determined that two items on the detail list can be summarized, the user will add a identifier to the detail list. I want to be able to update the summary list with this user defined identifier. My idea was use use the List ID as a way to 'find' the summary item. If the flow that creates the items, I create the Summary list item first and then created a numeric column on the Detail list to store the Summary List ID. When the user adds the identifier to the detail list a flow runs looking for the change. I am using the filter query in Get Items for the Summary List - ID eq Summary List ID. Below:

Unfortunately nothing is ever found in this Get Items action. I suspect it is due to a difference in data type. I have tried lots of different things and nothing seems to work. What am I missing?
Thank you