I dont get it

if GetUserPref("NoteskinType") == "1" then
local ntype1 = "bottom part arrow.png";
local ntype2 = "top part arrow";
elseif GetUserPref("NoteskinType") == "2" then
local ntype1 = "bottom part circle.png";
local ntype2 = "top part circle";
else
local ntype1 = "bottom part bar.png";
local ntype2 = "top part bar";
end;

local t = Def.ActorFrame {
    -- colour Bar and circle parts
    LoadActor("red.png") .. {
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y-118;x,SCREEN_CENTER_X);
    };
    LoadActor("green.png") .. {
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y-60;x,SCREEN_CENTER_X);
    };
    LoadActor("blue.png") .. {
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y-2;x,SCREEN_CENTER_X);
    };
    LoadActor("dark.png") .. {
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y+100;x,SCREEN_CENTER_X+180);
    };
    LoadActor("light.png") .. {
        Name="light";
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y+100;x,SCREEN_CENTER_X+180;diffuse,diffuselight);
    };

    -- colour selectors
    LoadActor("Selector.png") .. {
        Name="pos1";
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y-118;x,posred);
    };
    LoadActor("Selector.png") .. {
        Name="pos2";
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y-60;x,posgreen);
    };
    LoadActor("Selector.png") .. {
        Name="pos3";
        InitCommand=cmd(zoom,0.5;y,SCREEN_CENTER_Y-2;x,posblue);
    };
    LoadActor("Select round.png") .. {
        Name="circle";
        InitCommand=cmd(zoom,0.5;y,poscircleY;x,poscircleX);
    };

    -- noteskin part
    LoadActor( ntype1 ) .. {
        Name="Fill";
        InitCommand=cmd(y,SCREEN_CENTER_Y+100;x,SCREEN_CENTER_X-180;diffuse,DiffuseColor);
    };
    Def.Sprite {
        Texture=( ntype2 );
        Frames = Sprite.LinearFrames( 4, 1 );
        InitCommand=cmd(y,SCREEN_CENTER_Y+100;x,SCREEN_CENTER_X-180);
    };
};


-- update function to change it actively
local function Update(self)
    --if GetUserPref("Use10sinsteadof1s") == "1" then
        local red = GetUserPrefN("NoteskinColour4Red")*10/256;
        local green = GetUserPrefN("NoteskinColour4Green")*10/256;
        local blue = GetUserPrefN("NoteskinColour4Blue")*10/256;
    --[[else
        local red = GetUserPrefN("NoteskinColour4Red")/256;
        local green = GetUserPrefN("NoteskinColour4Green")/256;
        local blue = GetUserPrefN("NoteskinColour4Blue")/256;
    end;--]]

    local posred = self:GetChild("pos1"):x((SCREEN_CENTER_X-124)+string.format("%f",red)*255);
    local posgreen = self:GetChild("pos2"):x((SCREEN_CENTER_X-124)+string.format("%f",green)*255);
    local posblue = self:GetChild("pos3"):x((SCREEN_CENTER_X-124)+string.format("%f",blue)*255);

    if red > green and red > blue then
        local diffuselight = self:GetChild("light"):diffuse(color(string.format("%f, %f, %f, %f", "1", "1", "1", red)));
    elseif green > red and green > blue then
        local diffuselight = self:GetChild("light"):diffuse(color(string.format("%f, %f, %f, %f", "1", "1", "1", green)));
    elseif blue > red and blue > green then
        local diffuselight = self:GetChild("light"):diffuse(color(string.format("%f, %f, %f, %f", "1", "1", "1", blue)));
    end;

    local poscircleY = self:GetChild("circle"):y((SCREEN_CENTER_Y+100)-(string.format("%f",red)*62)+(string.format("%f",green)*32)+(string.format("%f",blue)*32));
    local poscircleX = self:GetChild("circle"):x((SCREEN_CENTER_X+180)-(string.format("%f",green)*54)+(string.format("%f",blue)*54));

    local DiffuseColor = self:GetChild("Fill"):diffuse(color(string.format("%f, %f, %f, %f", red, green, blue, "1")));
end;

t.InitCommand=cmd(SetUpdateFunction,Update);

return t;