HL7 in WSO2 ESB - which versions are supported?

I am evaluating the ESB of WSO2 and I saw that there is HL7 feature which you can install to enable HL7 transport. Is it possible to specifiy the version in the use of the feature? At some point of my application I have to distinguish between HL7 version 3 and HL7 version 2.6. Thanks in advance

We use Hapi library as our HL7 parser, which doesn't support HL7V3 messages.So, in ESB it supports only 2.x versions..