Very Urgent:Dynamically changing action items in VC

Hi all,

I'm checking for a status in webservice and depending on the output I have to perform two different actions, say, if status is "no", I have to call a BAPI, else I have to call a Webservice again to get further details.I have to do some settings in the expression editor...I'm not sure what has to be done....

Can some one help me out?

Thanks in Advance,

Ajitha