Getting Msg Type

hi all,

My scenario is, based on the msg type particular map should be selected.. I'm not using ESB here...

Can some one help me what I need to write in "Arguement1" in  predicate to find msg type...

i'm calling this rule from custom pipeline...

if it is ESb we can use "ContextMsgType".....

Thanks in advance,

Regards,

P.Uma Sankar