traits and negative values

[BiggBudd]

Is it possibly to "acquire" negative points towards a trait? or do they stop at 0?
eg.
Trigger SettlementExterminate_1
WhenToTest ExterminatePopulation

Condition not SettlementHasPlague
and CharacterIsLocal
and Trait supply > 1

Affects supply -21 Chance 100
;------------------------------------------

Trigger Supply_restart
WhenToTest CharacterTurnEnd

Condition CharacterIsLocal
and Trait supply = 0

Affects supply 1 Chance 100

I wont to be able to fully resupply after a sack etc (supply = 1),
And do trait points still keep adding after you reach max Threshold ?

[Squid]

Is it possibly to "acquire" negative points towards a trait? or do they stop at 0?

Not sure, but its kind of hard to figure out what you want to accomplish.

eg.
Trigger SettlementExterminate_1
WhenToTest ExterminatePopulation

Condition not SettlementHasPlague
and CharacterIsLocal
and Trait supply > 1

Affects supply -21 Chance 100
;------------------------------------------

Trigger Supply_restart
WhenToTest CharacterTurnEnd

Condition CharacterIsLocal
and Trait supply = 0

Affects supply 1 Chance 100

I wont to be able to fully resupply after a sack etc (supply = 1),

I rough guess but you'd be better off making the threshold for your first level 21. Also remember that in the condition its looking for the level of the trait not how many points have been gained in the trait.

And do trait points still keep adding after you reach max Threshold ?

Yes. The max threshold is just the highest level available, not the most points that can be gained. There's no known limit to points gained.

[BiggBudd]

To be clear, am using the supply trait that add 1 point per turn in enemylands. When the assault is finished the amount of supply you have acquired varies, depending how long you spent in enemy territory and besieging before successfully taking over settlement. I wont to be able to resupply that variable amount back to 1 point.

[HouseOfHam]

I'm pretty sure it's going to blow up if you try to go below 0.