Unable to set value to BelongTo / BelongToMany

[yong9402211]

• Laravel Version: 9.38.0
• Nova Version: 4.18.2
• PHP Version: 8.1.6

Description:

var aa = document.querySelector('form[data-form-unique-id]');
var formUniqueId = aa.dataset.formUniqueId;
Nova.$emit(formUniqueId + '-myField-value', 1);

Above code success set the "myField" value to 1, but if "myField" is belongTo, then above code not work.
How to assign value to a belongTo field?

Actually I wish to assign value to a BelongToMany field when attach record.

Detailed steps to reproduce the issue on a fresh Nova installation: