Multiple value customfield with JSD Edited

I have plugin that implements multivalue customfield. When i try set it preset value. it causes NPE with stack

ncaught exception thrown by REST service: null
java.lang.NullPointerException
	at scala.collection.convert.Wrappers$JListWrapper.iterator(Wrappers.scala:88)
	at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
	at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
	at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:59)
	at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:183)
	at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:45)
	at scala.collection.TraversableLike$class.to(TraversableLike.scala:635)
	at scala.collection.AbstractTraversable.to(Traversable.scala:104)
	at scala.collection.TraversableOnce$class.toList(TraversableOnce.scala:279)
	at scala.collection.AbstractTraversable.toList(Traversable.scala:104)
	at com.atlassian.servicedesk.syntax.conversion.ScalaConverters$$anonfun$ListIso$1.apply(ScalaConverters.scala:55)
	at com.atlassian.servicedesk.syntax.conversion.ScalaConverters$$anonfun$ListIso$1.apply(ScalaConverters.scala:54)
	at com.atlassian.fugue.converters.Iso$$anon$7.asB(ScalaConverters.scala:161)
	at com.atlassian.fugue.converters.ScalaConverters$ToScalaSyntax$.toScala$extension(ScalaConverters.scala:50)
	at com.atlassian.servicedesk.syntax.conversion.ListConversion$class.toScalaList(ListConversion.scala:78)
	at com.atlassian.servicedesk.internal.utils.Convert$.toScalaList(Convert.scala:34)
	at com.atlassian.servicedesk.internal.feature.customer.request.requesttype.field.RequestTypeFieldInternalServiceScala$$anonfun$setFieldValuesShim$1.apply(RequestTypeFieldInternalServiceScala.scala:226)
	at com.atlassian.servicedesk.internal.feature.customer.request.requesttype.field.RequestTypeFieldInternalServiceScala$$anonfun$setFieldValuesShim$1.apply(RequestTypeFieldInternalServiceScala.scala:226)
	at scalaz.$bslash$div.map(Either.scala:111)
	at com.atlassian.servicedesk.internal.feature.customer.request.requesttype.field.RequestTypeFieldInternalServiceScala.setFieldValuesShim(RequestTypeFieldInternalServiceScala.scala:226)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource.com$atlassian$servicedesk$internal$rest$RequestTypeFieldResource$$valueFunction$3(RequestTypeFieldResource.scala:384)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$updatePresetValues$1.apply(RequestTypeFieldResource.scala:385)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$updatePresetValues$1.apply(RequestTypeFieldResource.scala:385)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$$$$aba62dab434b135cf3ca7be2cfcd3d2$$$$nonfun$apply$84$$anonfun$apply$85.apply(RequestTypeFieldResource.scala:461)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$$$$aba62dab434b135cf3ca7be2cfcd3d2$$$$nonfun$apply$84$$anonfun$apply$85.apply(RequestTypeFieldResource.scala:460)
	at scalaz.$bslash$div.flatMap(Either.scala:134)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81$$anonfun$apply$82$$anonfun$apply$83$$anonfun$apply$84.apply(RequestTypeFieldResource.scala:460)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81$$anonfun$apply$82$$anonfun$apply$83$$anonfun$apply$84.apply(RequestTypeFieldResource.scala:459)
	at scalaz.$bslash$div.flatMap(Either.scala:134)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81$$anonfun$apply$82$$anonfun$apply$83.apply(RequestTypeFieldResource.scala:459)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81$$anonfun$apply$82$$anonfun$apply$83.apply(RequestTypeFieldResource.scala:458)
	at scalaz.$bslash$div.flatMap(Either.scala:134)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81$$anonfun$apply$82.apply(RequestTypeFieldResource.scala:458)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81$$anonfun$apply$82.apply(RequestTypeFieldResource.scala:457)
	at scalaz.$bslash$div.flatMap(Either.scala:134)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81.apply(RequestTypeFieldResource.scala:457)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1$$anonfun$apply$81.apply(RequestTypeFieldResource.scala:456)
	at scalaz.$bslash$div.flatMap(Either.scala:134)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1.apply(RequestTypeFieldResource.scala:456)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource$$anonfun$executeValueRequest$1.apply(RequestTypeFieldResource.scala:455)
	at scalaz.$bslash$div.flatMap(Either.scala:134)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource.executeValueRequest(RequestTypeFieldResource.scala:455)
	at com.atlassian.servicedesk.internal.rest.RequestTypeFieldResource.updatePresetValues(RequestTypeFieldResource.scala:385)
	... 3 filtered
	at java.lang.reflect.Method.invoke(Method.java:498)
	... 19 filtered
	at com.atlassian.plugins.rest.module.RestDelegatingServletFilter$JerseyOsgiServletContainer.doFilter(RestDelegatingServletFilter.java:154)
	... 1 filtered
	at com.atlassian.plugins.rest.module.RestDelegatingServletFilter.doFilter(RestDelegatingServletFilter.java:68)
	... 33 filtered
	at com.atlassian.servicedesk.internal.web.OperationalStatusAwareHttpFilter.doFilter(OperationalStatusAwareHttpFilter.java:31)
	... 4 filtered
	at com.atlassian.servicedesk.internal.web.UrlOperationalStatusCheckFilter.doFilterWhenLicensed(UrlOperationalStatusCheckFilter.java:38)
	at com.atlassian.servicedesk.internal.web.OperationalStatusAwareHttpFilter.doFilter(OperationalStatusAwareHttpFilter.java:31)
	... 4 filtered
	at com.atlassian.servicedesk.internal.web.PopulateEyeballForRestFilter.doFilterWhenLicensed(PopulateEyeballForRestFilter.java:33)
	at com.atlassian.servicedesk.internal.web.OperationalStatusAwareHttpFilter.doFilter(OperationalStatusAwareHttpFilter.java:31)
	... 8 filtered
	at com.atlassian.web.servlet.plugin.request.RedirectInterceptingFilter.doFilter(RedirectInterceptingFilter.java:21)
	... 53 filtered
	at com.atlassian.jira.security.JiraSecurityFilter.lambda$doFilter$0(JiraSecurityFilter.java:76)
	... 1 filtered
	at com.atlassian.jira.security.JiraSecurityFilter.doFilter(JiraSecurityFilter.java:74)
	... 16 filtered
	at com.atlassian.plugins.rest.module.servlet.RestSeraphFilter.doFilter(RestSeraphFilter.java:37)
	... 20 filtered
	at com.atlassian.jira.servermetrics.CorrelationIdPopulatorFilter.doFilter(CorrelationIdPopulatorFilter.java:30)
	... 5 filtered
	at com.atlassian.servicedesk.internal.web.CustomerContextSettingFilter.lambda$invokeFilterChain$0(CustomerContextSettingFilter.java:181)
	at com.atlassian.servicedesk.internal.utils.context.ReentrantThreadLocalBasedCodeContext.rteInvoke(ReentrantThreadLocalBasedCodeContext.java:142)
	at com.atlassian.servicedesk.internal.utils.context.ReentrantThreadLocalBasedCodeContext.runOutOfContext(ReentrantThreadLocalBasedCodeContext.java:94)
	at com.atlassian.servicedesk.internal.utils.context.CustomerContextServiceImpl.runOutOfCustomerContext(CustomerContextServiceImpl.java:64)
	at com.atlassian.servicedesk.internal.web.CustomerContextSettingFilter.outOfCustomerContext(CustomerContextSettingFilter.java:174)
	at com.atlassian.servicedesk.internal.web.CustomerContextSettingFilter.doFilterImpl(CustomerContextSettingFilter.java:130)
	at com.atlassian.servicedesk.internal.web.CustomerContextSettingFilter.doFilter(CustomerContextSettingFilter.java:121)
	... 4 filtered
	at com.atlassian.jwt.internal.servlet.JwtAuthFilter.doFilter(JwtAuthFilter.java:32)
	... 3 filtered
	at com.atlassian.web.servlet.plugin.request.RedirectInterceptingFilter.doFilter(RedirectInterceptingFilter.java:21)
	... 4 filtered
	at com.atlassian.web.servlet.plugin.LocationCleanerFilter.doFilter(LocationCleanerFilter.java:36)
	... 29 filtered
	at com.atlassian.jira.servermetrics.MetricsCollectorFilter.doFilter(MetricsCollectorFilter.java:25)
	... 27 filtered
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

Does somebody know how JSD works with customfield, so i can prepare plguin data to interact with JSD?

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