I am trying to use the Puppet module elastic/elasticsearch to deploy Elasticsearch but am unable to define the instance name when using the dashboard.

The documentation only references config files, not how to use the dashboard, and gives this as an example of the syntax:

elasticsearch::instance { 'es-01': }

I can manually add this to my site.pp and it will install, but I cannot get the dashboard to accept the instance name. Whatever I try, I get an error similar to this:

Error: Could not retrieve catalog from remote server: Error 500 on SERVER: Server Error: Evaluation Error: Error while evaluating a Resource Statement, Evaluation Error: Error while evaluating a Function Call, "{ 'es-01': }" is not a Hash.  It looks to be a String at /etc/puppetlabs/code/environments/production/modules/elasticsearch/manifests/init.pp:536:5 on node <server name>
Warning: Not using cache on failed catalog

It wants a hash and I've tried various formats in the dashboard, but none work e.g.

{instance => es-01}
{instance => 'es-01'}

Can anyone tell me what I'm missing please?

Thank you
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB