From cf16176f5efdae8f28a55c6826ad8a1019a7545e Mon Sep 17 00:00:00 2001
From: Raphanus Lo <coldturnip@gmail.com>
Date: Sun, 11 Sep 2022 20:56:43 +0800
Subject: [PATCH] bollmaker: fix backward compatibility of dynamic spread
 settings

---
 pkg/strategy/bollmaker/dynamic_spread.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkg/strategy/bollmaker/dynamic_spread.go b/pkg/strategy/bollmaker/dynamic_spread.go
index 9e6f2e009..52a1304bd 100644
--- a/pkg/strategy/bollmaker/dynamic_spread.go
+++ b/pkg/strategy/bollmaker/dynamic_spread.go
@@ -30,7 +30,13 @@ type DynamicSpreadSettings struct {
 func (ds *DynamicSpreadSettings) Initialize(symbol string, session *bbgo.ExchangeSession, neutralBoll, defaultBoll *indicator.BOLL) {
 	switch {
 	case ds.Enabled != nil && !*ds.Enabled:
-		// do nothing
+		// backward compatibility
+		ds.AmpSpreadSettings = &DynamicSpreadAmpSettings{
+			IntervalWindow: ds.IntervalWindow,
+			AskSpreadScale: ds.AskSpreadScale,
+			BidSpreadScale: ds.BidSpreadScale,
+		}
+		ds.AmpSpreadSettings.initialize(symbol, session)
 	case ds.AmpSpreadSettings != nil:
 		ds.AmpSpreadSettings.initialize(symbol, session)
 	case ds.WeightedBollWidthRatioSpreadSettings != nil: