From c14e6b318e29ca3e6cff8b6819fd25f20351ae9d Mon Sep 17 00:00:00 2001
From: "Zheng, Lei" <realthunder.dev@gmail.com>
Date: Mon, 24 Jan 2022 09:36:57 +0800
Subject: [PATCH] Spreadsheet: fix dependency calculation on external
 spreadsheet

---
 src/Mod/Spreadsheet/App/PropertySheet.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/Mod/Spreadsheet/App/PropertySheet.cpp b/src/Mod/Spreadsheet/App/PropertySheet.cpp
index 3ec64023db..949d947451 100644
--- a/src/Mod/Spreadsheet/App/PropertySheet.cpp
+++ b/src/Mod/Spreadsheet/App/PropertySheet.cpp
@@ -1142,10 +1142,11 @@ void PropertySheet::addDependencies(CellAddress key)
                 cellToPropertyNameMap[key].insert(propName);
 
                 // Also an alias?
-                if (docObj==owner && name.size()) {
-                    auto j = revAliasProp.find(name);
+                if (name.size() && docObj->isDerivedFrom(Sheet::getClassTypeId())) {
+                    auto other = static_cast<Sheet*>(docObj);
+                    auto j = other->cells.revAliasProp.find(name);
 
-                    if (j != revAliasProp.end()) {
+                    if (j != other->cells.revAliasProp.end()) {
                         propName = docObjName + "." + j->second.toString();
                         FC_LOG("dep " << key.toString() << " -> " << propName);