Check ammo for weapon not in main turret

[AnimalMother92 10]

So I had been using this trigger in a mission where a helo would report when it was running low on ammunition for its miniguns.

Cond:

littlebird1 ammo "TwinM134" < 1000

Act:

b1 sideChat "Running low on ammo!";

However, now I am using a different vehicle, but the issue is that its miniguns are not in the main turret, so the ammo command doesn't work. How would I go about checking this?