diff --git a/tcpdf.php b/tcpdf.php
index 24ef434..a2cfdee 100644
--- a/tcpdf.php
+++ b/tcpdf.php
@@ -6219,12 +6219,12 @@ class TCPDF {
 	 *  		$this->setPage($page);
 	 *  		if ($page == $start_page) {
 	 *  			// first page
-	 *  			$height = $this->h - $start_y - $this->bMargin;
+	 *  			$height += $this->h - $start_y - $this->bMargin;
 	 *  		} elseif ($page == $end_page) {
 	 *  			// last page
-	 *  			$height = $end_y - $this->tMargin;
+	 *  			$height += $end_y - $this->tMargin;
 	 *  		} else {
-	 *  			$height = $this->h - $this->tMargin - $this->bMargin;
+	 *  			$height += $this->h - $this->tMargin - $this->bMargin;
 	 *  		}
 	 *  	}
 	 *  }