Create new Contact Person with Cloud Application Studio

Hello,

for a Customer Project we would like to create a BusinessPartner with Role Person. Each Person has to be Contact Person for an Account. When creating a Business Partner (Person) with a Before-Save-Script: How can I assign the Account to the Person?

I tried (which is not working):

var newBP : elementsof BusinessPartner;

newBP.CategoryCode = "1";

var newBusinessPartner= BusinessPartner.Create(newBP);

newBusinessPartner.CurrentCommon.Person.Name.GivenName = "ExampleGivenName";

newBusinessPartner.CurrentCommon.Person.Name.FamilyName = "ExampleFamiliyName";

newBusinessPartner.Activate();

var account : elementsof BusinessPartner.Relationship;

account.RelationshipBusinessPartnerInternalID = "1000495";

account.RoleCode.content = "BUR001-2";

var newRelationship = newBusinessPartner.Relationship.Create(account);

Thank you very much in advance & best regards,

Henning