StringEscapeUtils.escapeJava Error Cannot escape double quotes

I have a string which looks like:

text = " "12.10 On-Going Submission of ""Made Up"" Samples." "

I am trying to escape the double quotes. I have tried the following thing:

import groovy.json.StringEscapeUtils;
textFinal: escapeJava(text)

BTW this text is going to be a JSON response. I am getting the following error as JSON response

groovy.lang.MissingMethodException: No signature of method: com.thomsonreuters.ald.aeandsdx.ArtifactController.escapeJava() is applicable for argument types: (java.lang.String) values: ["12.10 On-Going Submission of ""Made Up"" Samples."]{"status":"Bad request","msg":{"arguments":["\"12.10 On-Going Submission of\"\"

on the console I am getting this error :

2014-09-25 14:55:07,555 [http-bio-8080-exec-1] ERROR errors.GrailsExceptionResolver  - StringIndexOutOfBoundsException occurred when processing request: [GET] /artifact - parameters:
documentName: ICENSE AGREEMENT6
String index out of range: -25. Stacktrace follows:
Message: String index out of range: -25
    Line | Method
->> 1911 | substring      in java.lang.String
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1946 | subSequence    in     ''
|   1042 | append . . . . in java.io.PrintWriter
|     56 | append         in     ''
|    180 | value . . . .  in grails.converters.JSON
|    162 | convertAnother in     ''
|    202 | value . . . .  in     ''
|    162 | convertAnother in     ''
|    202 | value . . . .  in     ''
|    162 | convertAnother in     ''
|    202 | value . . . .  in     ''
|    134 | render         in     ''
|    150 | render . . . . in     ''
|    328 | $tt__index     in com.thomsonreuters.ald.aeandsdx.ArtifactController
|    198 | doFilter . . . in grails.plugin.cache.web.filter.PageFragmentCachingFilter
|     63 | doFilter       in grails.plugin.cache.web.filter.AbstractFilter
|   1145 | runWorker . .  in java.util.concurrent.ThreadPoolExecutor
|    615 | run            in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run . . . . .  in java.lang.Thread

Don't know why this wont work. This should. To get more clear picture what exactly I am trying to do refer Question 1 Question 2 and Question 3