Xwork Question - how to Inject another instance than default

[Torsten Krah]

Hi.
I did some rework to the struts2-portlet2-plugin to make it possible to hook 
in a custom URLBuilder.

I declared a default one like this:

<bean type="org.apache.struts2.portlet.util.PortletURLBuilder" name="default" 
class="Default" />

My application e.g. wants to support liferay using a custom url builder.

Using

<bean type="org.apache.struts2.portlet.util.PortletURLBuilder" name="default" 
class=Custom />

does not work because "default" is already loaded. 
How can i tell xwork, to inject my custom instance instead the default one?
What the common way to do this?

thx for help.

Torsten

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