JIRA with Sql Server 2008 Express

You can get detail on how to connect JIRA to SQL Server in Atlassian document
But there is one thing they didn’t mention, or maybe I just miss it.
If you want to connect to Sql Server Expression Edition. The connection string is different.
It should be like :
url=”jdbc:jtds:sqlserver://localhost:1433/jiradb;user=jirauser;password=jirauser;instance=sqlexpress”