not shooting

[istol]

i encoutered a strange thing

my entac jeep is not shooting even it got ammo it got ready status and damage 0 and still isn't some mmg or something shot at it but did not hit

any quesses what's going on ?

another strange thing is i bought hizbollah in -85 (same fight as the entac jeeps) and one of them got's the SAM and it is the reason i bough it (because none other have sam in lebanon -85 and im facing russians...) and it happens that my hizbollah's have shot 0 shots in ~30 turns with sams why is this ? they can see the choppers going at it and still wont shoot why ? i tried to nullify all other weapons too * * * 1 (1 for the sam)

friend got one theory that they are irregulars and wont work well and we thought maybe the helo have to stop in his vision and range and u have to shoot with ur turn ? but against skilled opponent that is almost impossible and the use of sam's have been in our games mostly of opponent's turns

so i choose bunch of useless sam's ? or what's the deal here ?

how can i use them effectively ? how can i SAM my enemy's helo's