SetupAction()

override bool SetupAction	(	PlayerBase	player,
		ActionTarget	target,
		ItemBase	item,
		out ActionData	action_data,
		Param	extra_data = NULL )

См. определение в файле ActionPackTent.c строка 65

    {   
        if ( super.SetupAction(player, target, item, action_data, extra_data ))
        {
            PlaceObjectActionData poActionData;
            poActionData = PlaceObjectActionData.Cast(action_data);
            poActionData.m_AlreadyPlaced = false;
            m_CommandUID = DayZPlayerConstants.CMD_ACTIONFB_DEPLOY_2HD; //Call the animation
            return true;
        }
        return false;
    }

Перекрестные ссылки ActionTarget() и PlaceObjectActionData::m_AlreadyPlaced.