JSON model on Layout UI element

Hi,

I have to different layouts in view, would want to apply to different JSON models .How can I do that.

Layout1 ---JSON model1

Layout2 ---JSON model2

Here is the sample code of mine

var aData1 = {

    lab1 : "First Name",

    lab2 : "Last Name",

    input1 : "ABC",

    input2 : "DEF" }

var omodel1= new sap.ui.model.json.JSONModel();

    omodel1.setData(aData1);

sap.ui.getCore().setModel(omodel1);  // Here is applied for whole view, but I want it to apply only for layout

var oLayout = new sap.ui.commons.layout.MatrixLayout(this.createId("matrix1"),{

    //id : "matrix1",

    layoutFixed : false

    });

Can some body help me. Thanks.

Regards,

Ram