How to create session scope bean in Jira plugin?

I tried to create session scope bean in Jira plugin by adding scope=“session” in bean entry in context.xml file.
But I got below exception:
Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: No Scope registered for scope name ‘session’
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:508)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:353)
at sun.reflect.GeneratedMethodAccessor153.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.atlassian.plugin.osgi.spring.DefaultSpringContainerAccessor.createBean(DefaultSpringContainerAccessor.java:99)
at com.atlassian.jira.config.webwork.JiraActionFactory$JiraPluginActionFactory.getActionImpl(JiraActionFactory.java:389)
at webwork.action.factory.PrefixActionFactoryProxy.getActionImpl(PrefixActionFactoryProxy.java:99)
at webwork.action.factory.JspActionFactoryProxy.getActionImpl(JspActionFactoryProxy.java:59)
at webwork.action.factory.CommandActionFactoryProxy.getActionImpl(CommandActionFactoryProxy.java:60)
at com.atlassian.jira.config.webwork.LookupAliasActionFactoryProxy.getActionImpl(LookupAliasActionFactoryProxy.java:61)
at webwork.action.factory.CommandActionFactoryProxy.getActionImpl(CommandActionFactoryProxy.java:60)
at webwork.action.factory.ContextActionFactoryProxy.getActionImpl(ContextActionFactoryProxy.java:36)
at webwork.action.factory.PrepareActionFactoryProxy.getActionImpl(PrepareActionFactoryProxy.java:37)
at com.atlassian.jira.config.webwork.JiraActionFactory$SafeParameterSettingActionFactoryProxy.getActionImpl(JiraActionFactory.java:147)
at webwork.action.factory.ChainingActionFactoryProxy.getActionImpl(ChainingActionFactoryProxy.java:53)
at com.atlassian.jira.config.webwork.JiraActionFactory.getActionImpl(JiraActionFactory.java:301)
… 2 filtered
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
… 48 filtered
Kindly assist me!