I need help with a light function

whenever i start it the drawing wont display on the screen also when i print alpha on the console it says that it constant value of 1 and doesnt change like it should? What do I do?

init = function()
  reps = 0

end
update = function()
end

//draw = function()
  //screen.setRadialGradient(0, 0, 50, "rgba(255,255,0,1)", "rgba(255,255,200,0)")
  //screen.fillRound(0,0,100,100)
//end
drawLight = function(x, y, radi, red, green, blue, a)
  r = radi*2
  print(r+" diameter")
  rgba = "rgba("+red+","+green+","+blue+","+a+")"
  print('"'+rgba+'"')
  alpha = a
  while reps <= radi*2
    draw = function()
      screen.setColor('"'rgba'"')
      screen.drawRound(x, y, r, r,'"'+rgba+'"')
    end
    draw()
    r -= 1
    reps+=1
    alpha -= reps/0.1
    print(radi+" radi")
    print(reps+" reps")
    print(x+" "+y+" "+r)
    print(radius+"radius")
    print(alpha+" alpha")
    print('"'+rgba+'"')
  end
end
drawLight(0,0,25,255,255,0,1)

I think this is right:

init = function() lightX = 0 lightY = 0 lightRadius = 25 lightRed = 255 lightGreen = 255 lightBlue = 0 lightAlpha = 1 lightReps = 0 // To control the drawing iterations within draw end

update = function() // Update logic if needed, e.g., animating lightAlpha end

draw = function() // Clear the screen or draw background if needed // screen.clear()

// Draw the light effect local currentAlpha = lightAlpha local currentRadius = lightRadius * 2 // Start with diameter local stepAlpha = lightAlpha / (lightRadius * 2) // Calculate alpha step local currentReps = 0

while currentReps < lightRadius * 2 do local rgba = "rgba(" + lightRed + "," + lightGreen + "," + lightBlue + "," + currentAlpha + ")" screen.setColor(rgba) screen.fillRound(lightX, lightY, currentRadius / 2, currentRadius / 2) // Radius for fillRound currentRadius -= 1 currentAlpha -= stepAlpha currentReps += 1 end end

// To initiate the light effect, you would set the global variables // For example, in init or in response to an event: // init() // This would set the initial light parameters

And it if does not work, then just show the whole project and it will be easier to fix. :)