The getFieldValue method gets the value of a field in a document. To return the values of a multi-value field, see getFieldValues.
getFieldValue( fieldname [, case])
| Argument | Description | 
|---|---|
| fieldname | (string) The name of the field to be retrieved. | 
| case | (boolean) A boolean that specifies whether fieldnameis case-sensitive. The argument is case sensitive by default (true). | 
(String). A string containing the value.
|  |