respAddNullValue()

This procedure adds Null value for existing field.

Parameter	Type		Description
ptr	POINTER	Mandatory	Pointer to field

The procedure returns pointer of field. If procedure can’t add value, then returns null.

NOTE: User do not need to provide any value. Procedure automatically adds null to JSON.`

Examples:

xxPtr = respAddField('data': 'contact');
respAddNullValue(xxPtr);