Example with mandatory variables not filled in

---
dynval1:                      # A dynamic famify for val1
  var1: example               # A dynamic variable
dynval2:                      # A dynamic famify for val2
  var1: example               # A dynamic variable
var2: example                 # A new variable

Example with all variables modifiable

---
dynval1:                      # A dynamic famify for val1
  var1: example               # A dynamic variable
dynval2:                      # A dynamic famify for val2
  var1: example               # A dynamic variable
var2: example                 # A new variable