Get Data from Jason Model

Hi Friends,

I have a Problem.

In the code bellow I try to read the data from a Jason model.

var oModelJson = new sap.ui.model.json.JSONModel(); 

oModelTree.read( '/ZIPW_WS2SWSColection', null, null, true, function(oDataTree, oResponse){

oModelJson.setData(oDataTree); } null);

var data = oModelJson.getData(); 

Now I want to get the data out of the variable 'data' .

How can I archieve this?

Thanks in advance

Joerg