Problem with Vehicle spawn point

[Crokapinjo]

Hy I have a problem with adding a spawn point for about 40 vehicles on Verdant Meadows Airport, i used Aircraft industry in Verdant Meadows mod and now i am trying to place some vehicles in, but here is the problem, i reed on gtaforum for IPL helper so i used it on countryw.IPL file to create spawn points, but that vehicles never shown up there, i tryed with GTASA SaveGame ENEX Updater, but no use, vehicles ar not spawning, can somebody help me with this... is there any easyer way? is there anything what i missed? Please!!!!