Unfortunately, we cannot directly pipe the answer from a specific row of a Matrix Spreadsheet question. However, as a workaround, you can add a separate Spreadsheet question for that specific row. Then, remove the separator in between those questions and disable auto-advance. Please also keep the survey in the Classic Layout. This way, the question will be displayed as a single question and will not appear as a separate question to the respondent.
Screenshot of Preview: https://go.screenpal.com/watch/cOjT6jnwVi0
Classic layout: https://www.questionpro.com/help/classic-layout.html
Auto-advance: https://www.questionpro.com/help/auto-advance.html