Add unit to unit group upon unloading from transport

[IronForge]

Request: A script, in GUI or JASS (preferably GUI) that does the following:

When unit exits a transport, on the condition that the unit is a hero,
Custom script: call SetCameraUnit(udg_u, Player(0))
Custom script: call SetMovementUnit(udg_u,Player(0),7)

For players 1 to 8. Note that in the custom scripts, player 1 is 0, player 2 is 1 and so on. Also, in the second line, the '7' refers to animation number.
The only problem is I need an event to detect unit leaving transport.

Comment: These triggers are part of the witcher's camera system, which I have no idea how it works.

Help appreciated.

 

[GhostThruster]

Save the unit in a variable by detecting him enter a transport using

• Unit - A unit Is loaded into a transport

and then detect him exiting a transport with Unit Enters Playable Map triggers.
I won't give you too much detail, like MUI and extra triggers. There's tutorials and Pharaoh_ on the Hive.