custom formula filter google sheets BY 20 CELL ONLY code example

Example: google sheets filter rows above current cell

-- Google Sheets: Filter rows above current cell
=filter(
  indirect("R2C3:R" & row()-1 & "C3", false),
  indirect("R2C3:R" & row()-1 & "C3", false) = "Search Word"
)
  
-- Note: Use must use R1C1 notation, not the A1 notation