You need to save these text and variable entries for some reason, because if it is just to save directly to the Google Spreadsheet, you can already send the data directly by clicking “OK”, as long as the data is on the same screen, if it is in different screens, then save in Variables.
Another point, why are you renaming the variables, just set it to empyt text or null, for a new entry of values, be they strings, numbers, images, links, json, lists, everything is possible with variables and a little patience.