How to set one way binding to text & datepicker?

Hello,

I am using JSON model which is two binding. In one of the scenarios I want to set sap.m.Text & sap.m.DatePicker to one way binding.

I am using xml view, I tried setting as

<Text text="{path: 'mainModel>DESCR'

          mode: sap.ui.model.BindingMode.OneWay}" />

I get error "uncaught Object".

Could someone help me out to fix this?

Thanks,

Rashmi