Hi,

If the script language has not been chosen on the GUI, I propose to add
a WARN message into the log to inform that the script will be
interpreted as a groovy script

It's avoid message like "ERROR -
jmeter.protocol.java.sampler.JSR223Sampler: Problem in JSR223 script
Echantillon JSR223, message:javax.script.ScriptException: Cannot find
engine named: '', ensure you set language field in JSR223 Test
Element:Echantillon JSR223" and allow to execute the  script

Antonio

I have modified the patch to:
   have better/useful warning message
   transform defaultScriptLanguage string in final static string

Antonio