Struggling to set a null value on a custom segment using SuiteTalk upsert. This works just fine to set a value:

<employee:customFieldList>

<core:customField scriptId="cseg_my_custom_segment" xsi:type="core:SelectCustomFieldRef">

<value internalId="1"/>

</core:customField>

</employee:customFieldList>

But how do I unset that value? I tried I few variations similar to

<value/>

and

<value internalId=""/>

but can’t find anything that will set that field to

null

.