Function that returns the ValueInput object of a name value pair by specifying its name
"namedValues_var" is a variable referencing a NamedValues object. | 
        
 | 
        
| Type | Description | 
| boolean | Returns true if successful | 
| Name | Type | Description | 
| name | string | The name of the name value pair to return the ValueInput object from | 
| value | ValueInput | The ValueInput object |