How to launch a Helium Application in local deploy mode

[fish fish]

Hi Group,

I have written a Helium application and deploy in local mode. Also I enable
it in 'Helium' page. However, I don't know how to launch the enabled
application in notebook. I tried type "%helium run" as showed in this
video: https://cwiki.apache.org/confluence/display/ZEPPELIN/Helium+proposal
, but error occurs which indicate no helium interpreter. Could anyone
kindly tell me how to launch Helium application in right way? Thanks!

Zeppelin version: 0.8.0-snapshot

application.json:

{
  "type" : "APPLICATION",
  "name" : "test_app",
  "description" : "test Helium App",
  "license" : "Apache-2.0",
  "artifact" : "./examples/zeppelin-mytest-0.0.1-SNAPSHOT.jar",
  "className" : "com.test.Test",
  "resources" : [[":org.apache.spark.sql.SparkSession",
":org.apache.spark.SparkContext",
":org.apache.spark.sql.SQLContext"]],
  "icon" : "<i class='fa fa-search-minus'></i>"
}