Creating a sub-item using n8n/API

Hi all, would really appreciate any help I can get.

I’m trying to build a simple process using n8n:

Collect information (including an item ID) via an n8n form >> find that item in Monday.com using a Monday node >> use the collected information to create a Monday sub-item under that item.

The first steps work. I input an ID value in the form, and with it find the correct item’s pulse.

The existing item shown here (1946299787) already has some sub-items I entered manually in Monday.

Would appreciate any help!