artileey oprators dont need to getin an m119,it's virtual artillery,in your normal artillery there must be an call artilley option selecet in click on map (range is max 500 meter form your position9 tahts it..
m119s target artillery only works m119's, which are on map when the game starts,if m119 respwned or carried with truks or dropped from choopers dont have that option.The carried and drooped guns created after game start and that artillery module dont see them...
maybe if some one modifie carry and drop scripts with the new attach to command instead of deleting and creating them,it should work...