How wargoal cost increase/decrease?

[Rauko]

Situation is: I am backing romania for their independence from austria in a crisis. Just me (spain) and scandinavia against france and austria.
The wargoal cost is 67 at the beginning, but the war lasted a lonf time and me not controlling romanian cores started to add warscore against me. When I realized, -14% WS, and the wargoal cost had increased up to 81.
I sent troops and took control of all romanian cores. Warscore started to change in my favour, but wargoal cost didn't decreased. Is it WAD?
It seems that wargoal cost increases with its contribution to wargoal, but it doesnt decrease when its contribution becomes positive???
Am I wrong at some point?

 

[SknerusMck]

When you add war goal for a territory, occupying it for some time will give you war score. You can see more details by hovering over the added war goals in war mini-view.
It doesn't change the war goal cost.

 

[Rauko]

When you add war goal for a territory, occupying it for some time will give you war score. You can see more details by hovering over the added war goals in war mini-view.
It doesn't change the war goal cost.

thank you SknerusMck. I know warscore changes with >75% ocupation or more than 720 days with <75%, but what I ask for is a change in wargoal enforce cost. It indeed increased over time from 67 up to 81 in 5 years of war.
Now after thinking about it I wonder if it is just tied to population and development of the provinces, and they just grew in population and/or infrastructure/factories.

 

[SknerusMck]

Hmm thats strange, I don't know why it increased so much. Maybe the country lost a region due to rebellion or another war so value of your war goal has risen.

 

[Rauko]

Comfirmed. It is due yo development of the wargoal provinces. I took a save from when wargoal cost was 70 and tagged to Austria. They where building forts in all romanian provinces. With instantconstruction the build finished the following day and... bang! Wargoal cost was now 81!
It seems each level of fort (and I asume also naval base) increases cost by 1. Rails dont count. I didnt do any more research on this.

 

[austrianemporer]

Comfirmed. It is due yo development of the wargoal provinces. I took a save from when wargoal cost was 70 and tagged to Austria. They where building forts in all romanian provinces. With instantconstruction the build finished the following day and... bang! Wargoal cost was now 81!
It seems each level of fort (and I asume also naval base) increases cost by 1. Rails dont count. I didnt do any more research on this.

Cool! I didn't know that.

 

[CaptianNato1]

Interesting. I'm probably going to exploit this in my future games