variable_exists

The following is a list of properties for the function variable_exists:

Property	Value
`brief`	Determine if a variable exists
`category`	miscellaneous
`description`	Return the true if the named variable exists.
`functionId`	variable_exists
`functionLabel`	variable_exists
`parameters`	[ { "dataType": "string", "description": "Name of variable to check. The name can optionally be preceded with a qualifier followed by \"::\".", "name": "name" } ]
`returns`	{ "dataType": "boolean", "description": "True if variable exists." }