In onButtonEvent function t.value not updating - lua

Question

I am designing an Odd One Out round for a game that I am developing, every time a button is pressed, the onButtonEvent function is supposed to check if the word selected is the odd one out and then refreshes the buttons with different words.
The words are updating and the value assigned to each button is updating, I have been printing it out to the console. I think the problem is when I assign right[num] = t.value the only values that go into the table are the first 3 values that were originally assigned to the buttons. Why is this not being updated?
local function onButtonEvent( event )
local t = event.target
--local phase = event.phase
if event.phase == "release" then
--num = num + 1
displayBtns()
right[num] = t.value
print(right[1])
print(right[2])
print(right[3])
print(right[4])
-- --s3 = table.concat(right)
--print(s3)
if right[num] == answers[num].right then
print("correct!")
elseif right[num] == answers[num].wrong then
-- t.alpha = 0
-- select.alpha = 1
print("incorrect!")
elseif right[num] == answers[num].wrong2 then
else
print("incorrect!")
end
num = num + 1
num2 = num2 + 1
s3 = ""
-- display.remove( btn3 )
-- btn3 = nil
-- display.remove( btn2 )
-- btn2 = nil
-- display.remove( btn1 )
-- btn1 = nil
end
--num = math.random(1,#t)
s3 = ""
end
function displayBtns()
btn3 = widget.newButton{
default = "images/Round4_blue_button.png",
label = answers[num].right,
fontSize = 22,
labelColor = { default={ 255, 250, 250}, over={ 0, 0, 0,} },
onEvent = onButtonEvent
}
btn3.value = answers[num].right
print(btn3.value)
btn2 = widget.newButton{
default = "images/Round4_blue_button.png",
label = answers[num].wrong2,
fontSize = 22,
labelColor = { default={ 255, 250, 250}, over={ 0, 0, 0,} },
onEvent = onButtonEvent
}
btn2.value = answers[num].wrong2
print(btn2.value)
btn1 = widget.newButton{
default = "images/Round4_blue_button.png",
label = answers[num].wrong,
fontSize = 22,
labelColor = { default={ 255, 250, 250}, over={ 0, 0, 0,} },
onEvent = onButtonEvent
}
btn1.value = answers[num].wrong
print(btn1.value)
print("----------")
--btn3.label = answers[num].right
-- p1Button = display.newImage("images/SinglePlayer_button.png", 90, 140)
-- p2Button = display.newImage("images/2Player_button.png", 90, 220)
-- p1Button.touch = onSceneTouch
-- p1Button:addEventListener("touch", p1Button)
-- p2Button.touch = onSceneTouch1
-- p2Button:addEventListener("touch", p2Button)
btn1.x = 90; btn1.y = 245
btn2.x = 240; btn2.y = 245
btn3.x = 390; btn3.y = 245
-- p2Button.x = 240; p2Button.y = 260
end
displayBtns()

Answer 1

The problem is probably here:
elseif right[num] == answers[num].wrong2 then
else
print("incorrect!")
end
You have nothing set in the elseif statement.