Need a way to change default component ROO Jsf 2

I have created an application using ROO,
Created am entity that have CreaationDate (Date), title (String), country (String), currency (String), description (String).

On the create/update page I need my CreaationDate Field to be readonly.
The country should be autocomplete using webservice to fill valued
When selecting a value of country, the currency should be updated (addClientBehavior)
description should be RichText.

The only way I make these requuirement by modifying the HomeBean_Roo_ManagedBean.aj
method
public HtmlPanelGrid HomeBean.populateCreatePanel()
, However, the warning was written:
// WARNING: DO NOT EDIT THIS FILE. THIS FILE IS MANAGED BY SPRING ROO
I need a way that make me choose another component (may be an annotation) for my page