var loadContact = record.load({

type: record.Type.CONTACT,

id: scriptContext.request.parameters.contactid,

isDynamic: true,

});

var currentAddressCount = loadContact.getLineCount({

'sublistId': 'addressbook'

});

for (var i = 0; i < currentAddressCount.length; i++) {

loadContact.selectLine({

sublistId: 'addressbook',

line: i

});

var defaultbilling = loadContact.getCurrentSublistValue({

sublistId : 'addressbook',

fieldId: 'defaultbilling'

});

if (defaultbilling == true) {

var addressSubrecord = loadContact.getCurrentSublistSubrecord({

sublistId: 'addressbook',

fieldId: 'addressbookaddress'

});

addressSubrecord.setValue({

fieldId: 'addr1',

value: scriptContext.request.parameters.address

});

}

loadContact.commitLine({

sublistId: 'addressbook'

});

}

var recordId = loadContact.save({

enableSourcing: true,

ignoreMandatoryFields: true

});

const contact = new Contact(scriptContext.request.parameters.contactid)
const addrline  =_.find(contact.addressbook, addr => addr.defaultbilling === true)
addrline.addressbookaddress.addr1 = scriptContext.request.parameters.address
contact.save()

standard

dynamic