diff --git a/swarmlab-app/src/run/app.js b/swarmlab-app/src/run/app.js
index a9dbf5e..a668195 100755
--- a/swarmlab-app/src/run/app.js
+++ b/swarmlab-app/src/run/app.js
@@ -395,8 +395,8 @@ cors(corsOptions),  (req, res, next) => {
                   console.log(JSON.stringify('mongo connected')) 
                   var datestart = DateTime.fromISO(RES.start).toISODate()
                   var dateend = DateTime.fromISO(RES.end).toISODate()
-                  var datestart = RES.start
-                  var dateend = RES.end
+                  var datestart = new Date(RES.start)
+                  var dateend = new Date(RES.end)
                   if(datestart && dateend){
                     var search_term = { $and: [ { date: { $gt: datestart } }, { date: { $lt: dateend } } ] };
                   }else if(datestart){