getter chain syntax

Can I use the any java string manipulations in getter chain syntax too? i am trying to split getSoapAction() string on / and find the last value in the getter chain (I am using this expression transaction splitting area).

eg. getSoapAction().substring(getSoapAction.lastIndexOf(/),getSoapAction.length)

currently appdynamics detects my serviceendpoints as  

service end point name = mySEPname

getSoapAction =http://mycompany.com/enterprise/billing/order:getOrders.

I would like to strip the http://mycompany.com/enterprise/billing/ and show only the order:getOrders in the service end point metrics.  

i tried different getter chain too e.g. getSoapAction().split(/).[getSoapAction().split(/)-1]

Not sure it accepts math like that either. any suggestions?

thanks