function UIFax:choice(choice,additionalInfo)

 

  .......

 

  -- VIP may choose to visit anyway if he is refused too often

  elseif (self.ui.hospital.vip_declined > 2 and vip_ignores_refusal == 2) and choice == "refuse_vip" then

    self.ui.hospital.num_vips = self.ui.hospital.num_vips + 1

    self.ui.app.world:spawnVIP(additionalInfo.name)    <------------ CRASH

    self.ui.hospital.vip_declined = 0

  elseif choice == "refuse_vip" then

    self.ui.app.world:nextVip() -- don't start an inspection

    self.ui.hospital.vip_declined = self.ui.hospital.vip_declined + 1

  elseif choice == "accept_vip" then

    self.ui.hospital.num_vips = self.ui.hospital.num_vips + 1

    self.ui.app.world:spawnVIP(additionalInfo.name)          <------------- but this is the same call for accepting

 

 

-- Removes the Message, executing a choice if given, else just deletes it

--!param choice_number (number) if given, removes the message by executing this choice.

function UIMessage:removeMessage(choice_number)

  if choice_number then

    if not self.fax then

      self.fax = UIFax(self.ui, self) -- NB: just create, don't add to ui

    end

    self.fax:choice(self.message.choices[choice_number].choice)     <---- Caller of the CRASH

  else

 

 

 

Function creating the invitation

Both choices have the "additionalInfo" field.

 

-- Creates VIP and sends a FAX to query the user.

function Hospital:createVip()

  local vipName =  _S.vip_names[math.random(1,10)]

  local message = {

    {text = _S.fax.vip_visit_query.vip_name:format(vipName)},

    choices = {{text = _S.fax.vip_visit_query.choices.invite, choice = "accept_vip", additionalInfo = {name=vipName}},

               {text = _S.fax.vip_visit_query.choices.refuse, choice = "refuse_vip", additionalInfo = {name=vipName}}}

  }

  -- auto-refuse after 20 days

  self.world.ui.bottom_panel:queueMessage("personality", message, nil, 24*20, 2)

end