From bd877e20a3da57b7577bcf0cf2621bb05d62cd2d Mon Sep 17 00:00:00 2001
From: Timothy Watson <twatson@Ruffer.co.uk>
Date: Tue, 25 Aug 2020 11:25:35 +0100
Subject: [PATCH] Modify secondary axis param check.  Only throw if number of
 valAxes is greater than 1.

---
 src/gen-charts.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gen-charts.ts b/src/gen-charts.ts
index e1cb30f67..282303819 100644
--- a/src/gen-charts.ts
+++ b/src/gen-charts.ts
@@ -499,7 +499,7 @@ export function makeXmlCharts(rel: ISlideRelChart): string {
 	// B: Axes -----------------------------------------------------------
 	if (rel.opts._type !== CHART_TYPE.PIE && rel.opts._type !== CHART_TYPE.DOUGHNUT) {
 		// Param check
-		if (rel.opts.valAxes && !usesSecondaryValAxis) {
+		if (rel.opts.valAxes && rel.opts.valAxes.length > 1 && !usesSecondaryValAxis) {
 			throw new Error('Secondary axis must be used by one of the multiple charts')
 		}