How to add Link to Story via VersionOne REST API?

I'm able to create new Story via POST to /VersionOne/rest-1.v1/Data/Story with corresponding XML payload. Setting all attributes (including relational) works like a charm. However I'm unable to figure out how to add a Link asset to the Story asset.

When I try POSTing to /VersionOne/rest-1.v1/Data/Link with following XML payload:

<Asset href='/VersionOne/rest-1.v1/New/Link'>
  <Attribute name='AssetType' act='set'>Link</Attribute>
  <Relation name='Asset' act='set'>
    <Asset href='/VersionOne/rest-1.v1/Data/Story/123' idref='Story:123'/>
  </Relation>
  <Attribute name='OnMenu' act='set'>true</Attribute>
  <Attribute name='URL' act='set'>http://my.example.com</Attribute>
  <Attribute name='Name' act='set'>My Link Title</Attribute>
</Asset>

The server however returns:

<Error href="/VersionOne/rest-1.v1/Data/Link">
  <Message>Violation'Readonly'Link.AssetType</Message>
  <Exception class="VersionOne.DataException">
      <Message>Violation'Readonly'Link.AssetType</Message>
  </Exception>
</Error>

Seems like adding links is prohibited but actually I can add Links via the standard web interface without issues.

My original idea was to create Link asset first and then update the Story with respective relational attribute pointing to that Link asset.

Any ideas anyone?

Thanks! (I'm using JavaScript/jQuery)

Solution

My bad. The <Attribute name='AssetType' act='set'>Link</Attribute> attribute in the POST payload is obviously wrong - it is trying to set the asset's type (link) which does not make sense since I'm stating the type in URL already. It works perfectly without the attribute (as expected).