@Ramon

So here it is working in the new map.
Check the Territory Tab for
Current Owner=Original Owner

.
In History EndTurn/Resources find Trigger SZ in the relevant round

Hi, @beelee

Thanks a lot about the research and suggestions!

It doesnt seem to work in the usual way, but it could be made to work with triggers (as the dog suggested).

I just wanted to thank you for your help and thinking along with me.

Cheers!

Hi, @wc_sumpton

Thanks a lot for your response,

The minus signal works perfectly! Thanks!

About the Sea Zones, to clarify:

In this map, we want Sea Zones to have a value of 1 PU. When an opponent captures a Sea Zones, the PU should transfer accordingly, so that the new owner receives 1 production each turn.

Cheers!

Hi, @TheDog

Thanks a lot for your response!

I made the following changes:

-added the variable list all players/all sz.
-added your code:

<attachment foreach="$All-Players$^$All-SZ$" name="conditionAttachment_SZ_@All-Players@@All-SZ@" attachTo="@All-Players@" javaClass="RulesAttachment" type="player">
<option name="directOwnershipTerritories" value="@All-SZ@" count="0"/>
</attachment>
<attachment foreach="$All-Players$^$All-SZ$" name="triggerAttachment_SZ@All-Players@@All-SZ@" attachTo="@All-Players@" javaClass="TriggerAttachment" type="player">
<option name="conditions" value="conditionAttachment_SZ@All-Players@_@All-SZ@"/>
<option name="territories" value="@All-SZ@"/>
<option name="territoryAttachmentName" value="TerritoryAttachment" count="territoryAttachment"/>
<option name="territoryProperty" value="originalOwner" count="@All-Players@"/>
<option name="when" value="before:@All-Players@1EndTurn"/>
</attachment>

However i'm not getting it to work correctly.

The seazones flips to the occupier as intended, but the PUs do not transfer (the original owner does lose the PUs)

for reference, each sea zone is defined like this:

each sz is defined like this:
<territoryOwner territory="Sea Zone 1 Hudson Bay" owner="British"/>

<territory name="Sea Zone 1 Hudson Bay" water="true"/>

<attachment name="territoryAttachment" attachTo="Sea Zone 1 Hudson Bay" javaClass="games.strategy.triplea.attachments.TerritoryAttachment" type="territory">
<option name="production" value="1"/>
<option name="blockadeZone" value="true"/>
</attachment>

am i missing something, or could this be due to the map being outdated?

Cheers!