Camel Scripting questions - may some of you can help

I am trying to user camel scripting for both a completion predicate, as well
as setting some header info I
need for posterior use.

Added to the POM the following:

...2.13.0
...
org.apache.camel
camel-script
${camel-version}

withing a router - I could setup the info directly as a string - something
like this:
.setHeader("thisIsTest", simple("${body.toString().substring(16, 25)}"))
which for posterior use I saved as part of the name since the routes produce
files...

After which I am trying to retrieve the information, as an example - the
file name would be
test.info1.info2.info3.info4.dat

then I have tried the following:
--javascript
.setHeader("AAOriginalFileName").javaScript("(request.getHeader('camelfilenameonly')).toString().split('.')[0]")

--groovy
.setHeader("AAOriginalFileName").groovy("(properties.resolve(request.getHeader('camelfilenameonly')).toString().split('.')[0]")

-- the javascript one returns me null unless I remove the split() from the
codethen it returns me the string I am looking for but I can seem to split
it - even though using Chrome and the
script console I am able to emulate the code behaviour I am aiming for.
Within camel I don't seem
to find a solution.

-- the groovy one - generates the follwoing message

org.apache.camel.FailedToCreateRouteException: Failed to create route
2_SegmentedFile at: >>>
SetHeader[AAOriginalFileName,
groovy{(properties.resolve(request.getHeader('camelfilenameonly')).toString().split('.')).toString()}]
<<< in route:
Route(2_SegmentedByDuns)[[From[file:Inbound/GroupedByDunsSeg... because of
No script engine could be created for: groovy
at
org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:910)
at
org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:175)
at
org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:778)
at
org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:2041)
... 37 more

My questions are:
Does Simple language has a Split?
Am I missing something?
Do I need to declare on the POM any dependencies - groovy or rhino?
Are there alternatives to create this behaviour?

thank you in advance for your time.