building bonus and slave faction

I am trying to compensate for the public order penalties caused by the slave faction being composed of many different cultures.

To do this I added a law bonus to the government buildings in the EDB text file
for example :
law_bonus bonus 40 requires factions { slave, }

this did not appear to have any effect

when i made it a general bonus by removing the faction requirement it affected all slave settlements.

Why does this not work for the slave faction as it does for other factions?

NB the slave faction has been set to the greek culture in descr_sm_factions.txt

I have also tried a negative test eg not factions 'all' , not cultures (listed) and not factions (all except slave listed)

You wanna increase slave settlements' happiness??

Maybe to prevent them from rebellion? :laugh4:

..or you playing as slaves? :inquisitive:

Yes I am playing as slaves.
I am testing a mod of mine and I am trying to make the slave faction less of pushover by compensating for the culture penalty because the settlements are owned by many different factions and the default culture is greek. There is a big penalty affecting public order because of this which makes many of the settlements ripe for rebellion.
I am also attempting to balance the corruption penalty to get their balance sheet out of the red.