From 72f62e04547d3ef90ae5383b83a3c2e4d4b2098c Mon Sep 17 00:00:00 2001
From: Nils <>
Date: Fri, 18 Dec 2020 00:59:38 +0100
Subject: [PATCH] repair block data change undo

---
 engine/api.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/engine/api.py b/engine/api.py
index 0f4b7dc..f8a54a9 100644
--- a/engine/api.py
+++ b/engine/api.py
@@ -896,9 +896,10 @@ def changeBlock(blockId, newParametersDict):
     """for example "name" or "minimumInTicks"  """
     track, block = session.data.blockById(blockId)
     moveFunction = _createLambdaMoveToForCurrentPosition()
+    oldData = block.getDataAsDict()
     def registeredUndoFunction():
         moveFunction()
-        changeBlock(blockId, block.getDataAsDict())
+        changeBlock(blockId, oldData)
     session.history.register(registeredUndoFunction, descriptionString = "change block")
     block.putDataFromDict(newParametersDict)
     callbacks._updateTrack(id(track))