scmJS docs

Modify Unit Hanger Count

Adds the amount of interceptors to carriers, or scarabs to reavers, for the number of units of the type in the location, up to the most each can hold.

Action 53 · Modify Unit Hanger Count(Player, Unit, Amount, Count, Location);

Argument Takes Stored in the action
Player a player or group bytes 16–19
Unit a unit type, or one of the unit classes bytes 24–25
Amount a whole number, 0 to 4,294,967,295 bytes 20–23
Count a number of units, 1 to 255, or All (stored as 0) byte 27
Location a location (Anywhere is location 64) bytes 0–3
Modify Unit Hanger Count("Current Player", "Protoss Carrier", 8, All, "Anywhere");