Transfer a property value to another item's property

Hi,

I'm working with AML to update the Data in aras innovator. i'm stuck because i can't seem to transfer a property from one item to another.

I have 2 items A and B. let us say that item A is a part and item B is a document.

item A has a property called x which has the value "test"

I want to transfer this value to the property y of item B

this is my progress for now:

<AML>
<Item action='get' type='document' version='0' id='123456' >
<y>
<Item action='get' type='part' select='x' id='987654' >
</Item>
</y>
</Item>
</AML>

Thank you in advance.