How to make Linkable the part of the message bundle

[balazska]

I have a sample message in message bundle: xyz {0} have been logged in.
I' d like to make an :

xyz <s:link value="{0}" action="..."> have been logged in

html generation.

How do I realize this issue?

thx.

[balazska]

so:

xyz <a href="..."> {0}" </a> have been logged in

and {0} is the message bundle parameter.