printing variable inside string allowed in Insight Script Console but not in Insight Groovy Script

[Beppe Marcon]

Hello, I'm using Insight version 5.6.2 and Jira.

I'm experiencing different behaviours when running groovy code inside "Insight Script Console" which I can reach by going in "Apps" >>"Insight">>"Insight Script Console"  and when running the same groovy code inside "Insight Groovy Script" which I can reach by clicking "Edit Workflow" >> transition properties >> "postfunctions" >> "Insight Groovy Script" in Jira.

For instance the following SSCCE (short, self contained, correct example) code:

package myapp

import org.apache.log4j.Level
import org.apache.log4j.Logger

public class MySuperApp
{
 Logger log

MySuperApp() {
 log = Logger.getLogger("net.MySuperApp")
 log.setLevel(Level.DEBUG)
 }

public void funx(String myParam) {
 log.debug("running fun: ${myParam}")
 }
}
MySuperApp app = new MySuperApp()
app.funx("hello")

returns an error in Insight Groovy script only:

Caught exception while attempting to perform action 11 from workflow 12009 on issue 'SU-762'
com.opensymphony.module.propertyset.PropertyImplementationException: Property 'myParam' not found

the reason is that ${myParam} somehow is not understood as correct syntax but I should instead opt for String concatenation, for instance:

log.debug("running fun: "+myParam)

The questions are:

• why "Insight Script Console" and "Insight Groovy Script" don't behave the same? do they use different interpreters?
• why the ${varName} syntax which is accepted by Groovy language specifications is not allowed in Insight Groovy Scripts? doesn't it support all Groovy syntax rules?