How to set Rendering property of an item in a Default Double Column

Hi ,
I have developed a self service query region with default double column region. I have placed a combination of Input Text , LOV component in that region. My Issue is , I need to set the rendering property of the LOV input during run time. I used the OAMessageLOVInputbean.setRendered(false) in my contoller class. But I found that this is not working.
Is there is any other way to handle the rendering property of item's in a default double column during run time.
Thanks

Here is the code snippet
import oracle.cabo.style.CSSStyle;
import oracle.apps.fnd.framework.webui.beans.message.OAMessageTextInputBean;
public void processRequest(OAPageContext pageContext, OAWebBean webBean)
    super.processRequest(pageContext, webBean);
      CSSStyle css =new CSSStyle();
             css.setProperty("text-transform","uppercase");
             OAMessageTextInputBean mtib=(OAMessageTextInputBean)webBean.findChildRecursive("HelloName");
             if(mtib!=null) {
             mtib.setInlineStyle(css);
}Hope it helps!!!
Thanks
AJ

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