Change Web-service destination system

Hi There,

How to change the WS destination  URL for WS action block based on the host system.

I have a BLS in DEV system calling a webservice from 3rd party DEV system . When i promoted this BLS to MII QA , Obviously it is still referring to old URL.

I want to dynamically change the URL of WS Action to call webservice of 3rd party QA system. Like wise, MII PROD should call Prod WS of 3rd party.

I can change the URL manually after the promotion, but wondering there should be elegant way to deal with in MII framework.

Any ideas?

Thanks

Hari