why won't this work?

[Rirre]

I've looked through this event a coupel of times now but can't find whats wrong with it, could you guys take a look at it and tell me whats wrong.

# The Byzantine regrowth#

event = {
id = 9999999
trigger = {
owned = { province 320 data = -1 }
owned = { province 355 data = -1 }
owned = { province 357 data = -1 }
owned = { province 359 data = -1 }
owned = { province 360 data = -1 }
owned = { province 361 data = -1 }
owned = { province 362 data = -1 }
owned = { province 363 data = -1 }
owned = { province 472 data = -1 }
owned = { province 473 data = -1 }
owned = { province 474 data = -1 }
owned = { province 475 data = -1 }
owned = { province 476 data = -1 }
owned = { province 477 data = -1 }
owned = { province 478 data = -1 }
owned = { province 480 data = -1 }
owned = { province 481 data = -1 }
owned = { province 482 data = -1 }
owned = { province 483 data = -1 }
owned = { province 484 data = -1 }
religion = orthodox
}
random = NO
country = BYZ
name = "The Byzantine regrowth"
desc = "When the rest of europ saw the growth of the newborn Byzantine empire, and seeing a potentiel buffert against the muslim hordes they where quick to acknowledge Byzantiums clamis on the eastern part of their old empire. With ther northen borders safe they byzantine then started a bloody and long campaing against the muslims to take back what was ones theirs. As a sideeffect of this the city of constantinopel grow incredably and the economy blossomed."
style = 1
date = { day = 1 month = june year = 1477 }
deathdate = { day = 1 month = january year = 1820 }

action_a = {
name = "Let's take what was ones ours"
command = { type = provincetax which = 357 value = 56 }
command = { type = provincemanpower which = 357 value = 11 }
command = { type = population which = -2 value = 26875 }
command = { type = addcore which = 469 }
command = { type = addcore which = 470 }
command = { type = addcore which = 471 }
command = { type = addcore which = 485 }
command = { type = addcore which = 486 }
command = { type = addcore which = 487 }
command = { type = addcore which = 490 }
command = { type = addcore which = 491 }
command = { type = addcore which = 492 }
command = { type = addcore which = 493 }
command = { type = addcore which = 494 }
command = { type = addcore which = 495 }
}
}

I hope it's nothing to obious, I dont wan't to fell completly stupid

Edit: I've done some minor changes now but it still won't work. Does anybody have any idea on why?