Update multiple values in relationship field not possible

• badhabit

• March 28, 2024 at 3:54 pm

Hello,
I am using Advanced Custom Fields PRO Version 6.2.7

Recently I have noticed that when I want to update a relationship field with multiple values, the whole ARRAY is not saved, but only the first value of the ARRAY.

I have used this code as a test:
update_field('menu', array(123,456), $post_id);

This is the output with var_dump:
int(123)

These are my settings for the relationship field:
{
"key": "field_60c789afded44",
"label": "menu",
"name": "menu",
"aria-label": "",
"type": "relationship",
"instructions": "",
"required": 1,
"conditional_logic": 0,
"wrapper": {
"width": "",
"class": "",
"id": ""
},
"wpml_cf_preferences": 1,
"post_type": [
"product"
],
"taxonomy": [
"product_cat:new"
],
"filters": [
"search",
"taxonomy"
],
"elements": "",
"min": "",
"max": "",
"return_format": "id",
"bidirectional_target": []
},