Smoke grenades fall through roofs - solution or workaround?

[kentrel 1]

I'm making a mission where an AI spawn group spawns on a random rooftop (from a set of locations I've picked) and the player has to fly to their location and extract them. The player locates them based on smoke grenades rather than waypoints. The point of the mission is to practice rooftop extractions.

The problem I'm having is that smoke grenades often fall through the roof and just fills up the rooms below and depending on how tall the building is its rarely visible from above the roof. It spawns at the exact position that the AI does, so I know the heights are correct, but it must fall through to the bottom. When I go there myself and throw a smoke grenade it falls through. I try to move it again using setPosATL but no luck.

Is there any solution or work around to this?

Thanks

[nimrod_z 8]

maybe try placing something like invisable heli pad at your req height and attach smoke grenade to it using -- attachTo command

[kentrel 1]

maybe try placing something like invisable heli pad at your req height and attach smoke grenade to it using -- attachTo command

This worked, thanks!