diff --git a/bzGraflow.js b/bzGraflow.js
index f3a6c50..44915ec 100644
--- a/bzGraflow.js
+++ b/bzGraflow.js
@@ -214,6 +214,7 @@ class BZgraflow extends Buildoz{
                 this.enterSubflow(id)
             })
             this.stagedNodes[id].appendChild(btnEnterSubflow)
+            this.stagedNodes[id].dataset.subflow = true
         }
         this.nodesContainer.append(this.stagedNodes[id])
         if(!this.flow.nodes.find(n => n.id === id)) {