The javascript implementation depends on the JVM and can differ between version. Serializing a collection will depend on the actual type that’s using in the scripting engine. It’s probably possible to make your script work on one JVM version, but then see it fail on another. A groovy script is a safer approach, as it’s not bound to such changes.
You should in <scriptTask …> set value like scriptFormat=“javascript”, it’s means not use juel but use javascript I think. I’m successful ! Thank you for nforrester, NB~!