diff --git a/Runtime/Scripts/Core/Cluster.cs b/Runtime/Scripts/Core/Cluster.cs
index 7b9566b..d213186 100644
--- a/Runtime/Scripts/Core/Cluster.cs
+++ b/Runtime/Scripts/Core/Cluster.cs
@@ -187,20 +187,22 @@ namespace NanoBrain {
                             Debug.LogError($"Could not find cluster Resource {synapseData.clusterName}");
                         else {
                             uint instanceCount = 1;
+                            ExternalClusterData externalClusterData = null;
                             foreach (ExternalClusterData externalCluster in clusterData.clusters) {
                                 if (externalCluster.clusterName == synapseData.clusterName) {
                                     instanceCount = externalCluster.instanceCount;
-                                    //extPrefab.name = externalCluster.name;
-                                    if (this.nuclei.Find(nucleus => nucleus.name == synapseData.clusterName) is not Cluster extCluster) {
-                                        extCluster = new(extPrefab, this, instanceCount);
-                                        //extCluster.name = clusterData.name;
-                                        extCluster.name = externalCluster.name;
-                                    }
-                                    Neuron extNeuron = extCluster.GetNeuron(synapseData.neuronName);
-                                    Debug.Log("Add receiver for external");
-                                    extNeuron.AddReceiver(receiver);
+                                    externalClusterData = externalCluster;
                                 }
                             }
+                            if (this.nuclei.Find(nucleus => nucleus.name == synapseData.clusterName) is not Cluster extCluster) {
+                                extCluster = new(extPrefab, this, instanceCount);
+                                if (externalClusterData != null)
+                                    extCluster.name = externalClusterData.name;
+                                //extCluster.name = clusterData.name;
+                            }
+                            Neuron extNeuron = extCluster.GetNeuron(synapseData.neuronName);
+                            Debug.Log("Add receiver for external");
+                            extNeuron.AddReceiver(receiver);
                         }
                     }
                     else {
@@ -392,7 +394,7 @@ namespace NanoBrain {
                     foreach (Synapse synapse in neuron.synapses) {
                         if (synapse.trainable) {
                             synapse.weight = (float)randomGenerator.NextDouble() * 2.0f - 1.0f;
-                            // Debug.Log($"{neuron.name}-{synapse.neuron.name} weight = {synapse.weight}");
+                            Debug.Log($"{neuron.name}-{synapse.neuron.name} weight = {synapse.weight}");
                         }
                     }
                 }