The truck has no canopy. It has several states though:
Model: armies\soviet\vehicles\us6_truck\us6_truck
State machine name: us6_state
Values: base, katyusha, supply
State machine name: supplies_loaded
Values: empty, partial, half, majority, full
These states can be found with the worldbuilder (C:\Program Files (x86)\Steam\steamapps\common\Company of Heroes 2\WorldBuilder_CoH_2.exe)
This has a NIS function which can show a list of states for each model.
Edit: This video might be more helpful than the guide: https://youtu.be/5V62qgEu3Ww?t=428 (7:05 - 9:00)
-
#Steam AliasWL%Streak
- 1.811137.855+11
- 2.46569.871-1
- 3.881302.745-2
- 4.403212.655+5
- 5.14465.689-1
- 6.21156.790-2
- 7.303130.700-1
- 8.361189.656+7
- 9.501325.607+4
- 10.408297.579+2

Netherlands



cblanco ★
보드카 중대
VonManteuffel
Heartless Jäger