diff --git a/src/App.js b/src/App.js
index 16c002e..b161582 100644
--- a/src/App.js
+++ b/src/App.js
@@ -125,7 +125,7 @@ class App extends React.Component {
     .then(() => this.refreshProject())
     .catch(e => console.log('update fails', e));
 
-    setProjectSetting(this.state.selectedProject.Name, [obj.topType, obj.centreType, obj.middleType])
+    setProjectSetting(this.state.selectedProject.Name, [+obj.topType, +obj.centreType, +obj.middleType])
   }
 
   render() {