From ef0748e96bdc2826aa60602e4e4a577e6e6b910d Mon Sep 17 00:00:00 2001
From: Noisyfox <timemanager.rick@gmail.com>
Date: Mon, 29 Sep 2025 23:34:26 +0800
Subject: [PATCH] Ignore the index when accessing a scalar variable

---
 src/libslic3r/PlaceholderParser.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libslic3r/PlaceholderParser.cpp b/src/libslic3r/PlaceholderParser.cpp
index b83ecbac0e..92e4210f3c 100644
--- a/src/libslic3r/PlaceholderParser.cpp
+++ b/src/libslic3r/PlaceholderParser.cpp
@@ -1011,10 +1011,10 @@ namespace client
            OptWithPos       &output)
         {
             if (! ctx->skipping()) {
-                if (! opt.opt->is_vector())
-                    ctx->throw_exception("Cannot index a scalar variable", opt.it_range);
                 if (index < 0)
                     index = 0; // Orca: fallback to first element if index < 0, this matches the behavior of BambuStudio
+                if (!opt.opt->is_vector())
+                    index = -1; // Orca: ignore the index if variable is scalar, this matches the behavior of BambuStudio
                 output = opt;
                 output.index = index;
             } else