From a91553c513840d708cfe327180a7d4fe95bcc56a Mon Sep 17 00:00:00 2001
From: Jon Mease <jonmmease@gmail.com>
Date: Fri, 17 Nov 2023 06:26:12 -0500
Subject: [PATCH] Fix vegafusion-runtime

---
 vegafusion-runtime/src/task_graph/runtime.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/vegafusion-runtime/src/task_graph/runtime.rs b/vegafusion-runtime/src/task_graph/runtime.rs
index 87ad5800..7e4e5b0c 100644
--- a/vegafusion-runtime/src/task_graph/runtime.rs
+++ b/vegafusion-runtime/src/task_graph/runtime.rs
@@ -41,6 +41,7 @@ use vegafusion_core::proto::gen::tasks::{
     TaskValue as ProtoTaskValue, TzConfig, Variable, VariableNamespace,
 };
 use vegafusion_core::spec::chart::ChartSpec;
+use vegafusion_core::spec::values::MissingNullOrValue;
 use vegafusion_core::task_graph::graph::ScopedVariable;
 use vegafusion_dataframe::connection::Connection;
 
@@ -281,7 +282,7 @@ impl VegaFusionRuntime {
             match export_update.namespace {
                 ExportUpdateNamespace::Signal => {
                     let signal = spec.get_nested_signal_mut(&scope, name)?;
-                    signal.value = Some(export_update.value);
+                    signal.value = MissingNullOrValue::Value(export_update.value);
                 }
                 ExportUpdateNamespace::Data => {
                     let data = spec.get_nested_data_mut(&scope, name)?;
@@ -681,7 +682,7 @@ impl VegaFusionRuntime {
                 ExportUpdateNamespace::Signal => {
                     // Always inline signal values
                     let signal = spec.get_nested_signal_mut(&scope, name)?;
-                    signal.value = Some(export_update.value.to_json()?);
+                    signal.value = MissingNullOrValue::Value(export_update.value.to_json()?);
                 }
                 ExportUpdateNamespace::Data => {
                     let data = spec.get_nested_data_mut(&scope, name)?;