Displaying Garrison Forces on buildings previously without Garrisons

[kuraiken]

Hey folks,

I'm trying to have the building tooltips show the units garrisoned - so far unsuccessful.

My goal is to allow the player to see on the tooltip what units are added to the garrison, for example, through building an encampment.
Adding the unit in question to the building as garrison works, the units are correctly spawned.

What eludes me, however, is how to change the tooltip to show the garrison, similarily as to how the castle and the level 4 recruiting buildings do. What am I missing?

[kuraiken]

Okay, it seems the problem's not with the building but with my custom units.
Is there something special I need to do so that custom garrison units are not only spawned, but also shown on the building tooltips?

[kuraiken]

Okay, I found it out myself. The answer is that only those units are shown in the UI that are allowed in the "Units_to_groupings_military_permissions_table".
Unless the faction specified (or the general group, such as japan, ikko_ikki, and so on) is set for the unit, it may be spawned, but will not show on the tooltip.
This is also why Samurai Retainer aren't shown in an ikko_ikki castle. They're not allowed in the groupings.