Result = AddBillboard(#BillboardGroup, x, y, z)Description
Adds a billboard to the specified billboard group at the given position, relative to the position of the billboard group. The billboard group must have previously been created using the CreateBillboardGroup() function.
#BillboardGroup The number of the billboard group you want to attach the new billboard to. x, y, z The coordinates to create billboard at, relative to the coordinates of the billboard group.
The new billboard index. This value can be used to manipulate this specific billboard with the commands which needs one.