From 265b9a42fb566d4438a06e139b2133744c0f5b9f Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Sun, 19 Apr 2020 09:01:25 +1000
Subject: [PATCH] ArduCopter: invalidate param count when changing param tree
 structure

---
 ArduCopter/system.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ArduCopter/system.cpp b/ArduCopter/system.cpp
index 56186eb5fd..d61b66c376 100644
--- a/ArduCopter/system.cpp
+++ b/ArduCopter/system.cpp
@@ -611,6 +611,9 @@ void Copter::allocate_motors(void)
 #if FRAME_CONFIG == HELI_FRAME
     convert_tradheli_parameters();
 #endif
+
+    // param count could have changed
+    AP_Param::invalidate_count();
 }
 
 bool Copter::is_tradheli() const