Passing groovy 'lists' via testcase properties...

Thank you PramodYadav for your efforts and posting the solution.

There is a suggestion:

Change #1

From

import javax.naming.Context
def list = [1,2,3,"adfadfas"]
context.setProperty("list",list)
log.info "from script 1 " + list

To

context.list = [1,2,3,"adfadfas"]
log.info "from script 1 : ${context.list}"

Change #2

From

import com.eviware.soapui.support.types.StringToObjectMap
def contextMap = new StringToObjectMap( context )
def list1 = contextMap.list
log.info "from script 2" + list1

To 

log.info "From script 2 : ${context.list}"

But there is a limitation with above approach i.e., that works only if test case is run and does not work if individual steps are run.

Hope you aware of it.