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You are solving a spreadsheet benchmark task in a real workbook. Objective: Produce the correct final workbook state for the expected answer region. What matters: - Only the values in the expected answer region will be graded. - The workbook is the answer. Instructions: 1. Read the workbook and inspect the relevant data region first. 2. Infer the required result for the provided workbook instance. 3. Write the final value(s) directly into the expected answer region. 4. Do not rely on prose, formulas in your chat response, pseudocode, or VBA as the answer unless the benchmark explicitly requires those to be written into cells. 5. If the natural-language task asks for a general method, formula, or macro, convert that into the concrete result needed for this workbook instance. 6. Keep your final text response short and only summarize the workbook cells you changed. Relevant data region(s): Expected answer region(s): 'Sheet1'!C6:C31 Expected answer sheet(s): Task: I need to create a dynamic Index in Excel that changes according to the date in Sheet1, Cell C5, so that it corresponds to the appropriate column in Sheet2. The column is determined by matching the date in row 5, and the item is then looked up within that column. If items in particular column is not available it should show as "New" otherwise same item should show. My original formular is: IFNA(INDEX(Sheet2!F:F,MATCH(Sheet1!B6,Sheet2!F:F,0)),"NEW"), which has something wrong.