Help making a mod (not sure where to place this post)

[TheRealPinkoScum]

Im trying to make my first mod. It's really small, just haven't found the mod I want or gotten anyone to make it for me, so I'm trying to teach myself.

 

All Im trying to do is place a few items from a couple other mods in a specific place in the world. Im using the fo4 creation kit, and I've learned how to place items in the world, or put them in a custom made container, but it only seems to work with vanilla items. Every time I put an item from a mod into the container, or into the world, using the creation kit it won't actually show up in the game. Only the vanilla items will.

For example: what I'm trying to do it put a Minuteman Uniform from Corvalho1's "Militarized minutement", an RU556 rifle from FX0x01's mod, 300 rounds of 556 ammo, and a combat helmet, into a container in as early a place into the game as I can. I've tried putting them into a locker in the armory cage in the vault overseer's office of Vault 111, and tried putting them into a duffelbag in the bunker in Sanctuary. But only the Vanilla items will appear (the locker, duffel bag, 556 rounds, and combat helmet).

Can anyone direct me to some help? Or explain what I'm doing wrong?

[TheRealPinkoScum]

Please ignore this post. I should have put it in the Mod Talk section. I'd delete it if I could.