Using custom jar in groovy script

Hi all,

I am trying to use acustom jar in a groovy test script but I get the error

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed: Script4.groovy: 1: unable to resolve class xxx.yyyy.util.Util @ line 1

when my script calls

import xxx.yyyy.util.Util;

I have added the relevant jar to:

C:\Program Files\SmartBear\ReadyAPI-1.4.1\jre\lib

C:\Program Files\SmartBear\ReadyAPI-1.4.1\bin\ext

Restarted ReadyAPI

What am I missing or doing wrong?

Any help much appreciated

Thanks