Couple of questions

[Squid]

I have a few questions that I hope can be answered.

1) Is there a condition that would let me test the (net) population growth rate in a settlement? (There's one for tax level and one for health)

2) Can what advice is offered be modded? I know the messages for a particular advice trigger can be modded, and custom messages & advice can be created, but not if we can mod the game so the condition AdviseBuild is set differently.

3) What does a general have to do in order for the NoActionThisTurn condition to be false?

EDIT: 4) Is there a way to change/set which building can and cannot be destroyed?

Thanks,