Hi Alexander,

Sorry for my bad english. After executing the code the property is defined. My problem is now that when I import my JSON data which looks like this:
 

{
  "entry": [
 {
   "Datum": "08-05-2015",
   "Kalorien": 1934,
   "Schritte": 905,
   "Distanzinm": "0,65",
   "Stockwerke": 0,
   "Aktivitaetsitzendinmin": 1355,
   "Aktivitaetleichtinmin": 46,
   "Aktivitaetmoderatinmin": 0,
   "Aktivitaetintensivinmin": 0,
   "LeistungsumsatzinKalorien": 168

]

It only saves the data as %DOC as shown in the picture,  but I want it to save it as the header "Kalorien". So after creating the property and importing the data is should be saved as "Kalorien" aswell or am I wrong?