Hello,
In my variables portion I want to be able to specify default values that 
can be overridden for disk_size, CPUs, and RAM (this is for jetbrains' 
vcenter builder plugin). In the builder section, I have this:
       "disk_size": 100,
      "CPUs": 4,
      "RAM": 8000,

and it works fine, but I want to be able to use variables in place.  
However, if I put format as:
      "disk_size": {{user `vm_disk_size`}},
      "CPUs": {{user `vm_cpu`}},
      "RAM": {{user `vm_ram`}},

(No quotations around the value), the parser chokes because it doesn't know 
what to do with the brackets. I would expect this.
If I put the quotation marks around the values, however, I get the 
following error:
* variable vm_cpu: '' expected type 'string', got unconvertible type 
'float64'

So it seems like I need to be able to denote this variable as a non-string 
type. Any idea how I do this?
Thanks

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