--Title and Message (default)
local welcome_title_description = "How to change stuff"
local welcome_message_description =
[[
How to change message stuff...
]]

-- Title and Message (2)
local welcome_message_title_2= "Add a Second Title Here"
local welcome_message_description_2=
[[
Add a second message here...
]]

--Title and Message (3)
local welcome_message_title_3= "Add a third title here"
local welcome_message_description_3=
[[
Add your third message here
]]

{
name = "welcome_message",
label = "Choose a Message",
options = {
{description = "default", data = welcome_message_description},
{description = "Message 2", data = welcome_message_description_2},
{description = "Message 3", data = welcome_message_description_3},
},
default = welcome_message_description,
},
{
name = "welcome_message_title",
label = "Choose a Title",
options = {
{description = "default", data = welcome_message_title},
{description = "Title 2", data = welcome_message_title_2},
{description = "Title 3", data = welcome_message_title_3},
},
default = welcome_message_title,
}

This allows me to change the message at any point in the game.