Trying to get a basic pencil working

[dillera]

I seem stuck on this.

/.rbenv/versions/1.9.2-p290/lib/ruby/gems/1.9.1/gems/pencil-0.2.10/lib/models/graph.rb:302:in block in expand': undefined methodfirst' for "jvm.gc.PS-MarkSweep.runs":String (NoMethodError)

Graph is the most basic:

---

:graphs:
JVM1:
title: "JVM"
targets:
jvm.gc.PS-MarkSweep.runs:
🔑 key
:color: color

:dashboards:
JVM Notes:
title: JVM
graphs:
- JVM1: