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Hi luoqianhe this should solve your problem: (?s)<(?<TAG>Event ID)\b[^>]*+>(?>(?:(?!<\k<TAG>\b)(?!</\k<TAG>\b)(?!<Modified\b).)++)*+</\k<TAG>> You can find more information here: Which RegExp to find a block of several lines, thanks to criteria relative to first and last line of the block BR, Fleggy...