A little modding help please

[Adept]

Ack! I've hit a few problems still.

I'm not managing to get the local defence right. What is the correct syntax? This is what I'm attempting.

#defcom1 240
#defcom2 241
#defunit1 18
#defunit1b 33
#defunit2 39
#defunit2b 2771
#defmult1 20

/edit oh wait, I need to add #defmulti1b #defmulti2 #defmulti2b and so forth.

Is the default also 20 of these.

def1 = militia (shields)
def1b = archers
def2 = heavy infantry
def2b = provincial cavalry <-- non standard unit, but very much indie grade

/edit 2

I also have a custom magic site at the capital province. Is there a way for me to pick the image shown?