diff --git a/rts-sim-testing-message b/rts-sim-testing-message
index 5b0baec..a629336 160000
--- a/rts-sim-testing-message
+++ b/rts-sim-testing-message
@@ -1 +1 @@
-Subproject commit 5b0baec461fba33bcb76212ce2b1a19d1b79057f
+Subproject commit a6293366a132680309a62855d4c4e19546ba3aa8
diff --git a/src/api/Simulation.ts b/src/api/Simulation.ts
index 819ecc3..890c4c4 100644
--- a/src/api/Simulation.ts
+++ b/src/api/Simulation.ts
@@ -57,6 +57,7 @@ export async function addTrain(data: {
   configTrain: TrainConfigData;
   trainEndsA: TrainEnd;
   trainEndsB: TrainEnd;
+  trainCoachNum: number;
 }) {
   const response = await api.post(`${UriBase}/train/add`, data);
   return response.data;
diff --git a/src/components/draw-app/dialogs/AddTrainDialog.vue b/src/components/draw-app/dialogs/AddTrainDialog.vue
index d778e38..ba074e6 100644
--- a/src/components/draw-app/dialogs/AddTrainDialog.vue
+++ b/src/components/draw-app/dialogs/AddTrainDialog.vue
@@ -178,6 +178,7 @@ function onCreate() {
         trainEmergencyBrake: trainConfig.value.train_emergency_brake,
         configTrain: trainConfig.value.trainConfigData as TrainConfigData,
         trainControlMapId: trainConfig.value.trainControlMapId,
+        trainCoachNum: parseInt(trainConfig.value.train_sets),
         trainEndsA: {
           radarCheckSpeedDiff: 0,
           radarCheckTime: 0,