Loyal Protectorates is not possible with the common VH/N setting?

[Atraphoenix]

My testing on alex.exe with VH/N difficulty setting.

human faction AS

last testing date 255 BC

protectorates

pahlava loyal protectorate since 272 bc I gave 4 provinces them to make them my protectorate.

baktria loyal protectorate since 265 bc I gave no provinces them to make them my protectorate.

Ptolemaioi loyal protectorate since 265 bc I gave no provinces them to make them my protectorate.

I attacked baktria then made protectorate with force diplomacy

pahlava attacked me I made them my protectorate by giving 4 provinces with force diplomacy

ı was in war with ptolemaoi ı captured sidon then made them my protectorate with force diplomacy

until the end of my testing date (265 bc) pahlava was loyal for 17 years baktria and ptolemaoi for 10 years.

one more thing my protectorates did not invade even rebel provinces after they became my protectorate.

ı will try untill 20 years cos it was enough for me.

p.s: I am using 1.2 EB version + lz3's minimod and as ı said before ı made them my protectorate with FD that LZ3 also added it his minimod.
maybe some screenies tomorrow ı can add..

I do not know why but only in 1st and 2nd turn you get some money after 3rd turn you get nothing from yr protectorates!