diff --git a/node-red-node-wot/plugin-resources-src/node-wot-plugin-lib.ts b/node-red-node-wot/plugin-resources-src/node-wot-plugin-lib.ts
index 166e5c7..006fed2 100644
--- a/node-red-node-wot/plugin-resources-src/node-wot-plugin-lib.ts
+++ b/node-red-node-wot/plugin-resources-src/node-wot-plugin-lib.ts
@@ -88,7 +88,7 @@ export const createClientFlowUsingDashboard = (tdString: string, existedNodes: a
                 ...commonParams,
                 propertyName,
                 propertyDescription: tdProperty.description,
-                propertyObserve: tdProperty.observable,
+                propertyObserve: tdProperty.observable || false,
                 inputMode: DATATYPES[tdProperty.type || "propertyTypeNull"].inputMode,
                 convert: DATATYPES[tdProperty.type || "propertyTypeNull"].typeConvert,
             }