Update all generation of an object at once with AML

Hi community,

I am trying to modify a property on all the generation of an item.

Thus I am trying to merge those two requests

1) Modify the latest generation without changing the generation :

<AML>
  <Item action='merge' type='Part' where="[Part].item_number='1234'" version='0'>
    <_authoring_tool_id_label>TATA</_authoring_tool_id_label>
  </Item>
</AML>

2) get all generation

    <Item action='get' type='Part'>
      <generation condition='ge'>0</generation>
      <_title>1234</_title>
    </Item>

Thus I tried something like

<AML>
  <Item action='merge' type='Part' where="[Part].item_number='1234' and [Part].generation>'0'" version='0'>
    <_authoring_tool_id_label>TATA</_authoring_tool_id_label>
  </Item>
</AML>

But I can not find how to make it work.

I will try to use the config id or swith to sql query... It's for a datamodel modification and be done one time thus it could be ok.

Thanks,

Hadrien