Defaulting context value in DFF while opening a page

Hi All,

We have a requirement to default context value in standard quoting page while opening create quote page.

I did controller extension to default the value but it is not working, Below is the code in controller.

        OADescriptiveFlexBean  otb= (OADescriptiveFlexBean)webBean.findChildRecursive("QotHdrFlex");

        otb.setFlexContext(pageContext,"Non Instrument");   

       otb.setContextListRendered(true);

        otb.processFlex(pageContext);

Please help me to resolve this.

Thanks,

Ravi Kumar