Ajuda simples com shop in game

ShopButton < UIButton
  id: shopButton
  text-align: left
  text-offset: 55 -20
  font: sans-bold-16px-italic
  color: white
  icon-align: left
  icon-offset: 5 0
  height: 48
  background-color: #000000AA
  border-width: 1
  border-color: black
  anchors.top: prev.bottom
  anchors.right: parent.right
  anchors.left: parent.left
  margin-top: 3
  @onClick: onClickInItem(tonumber(self:getChildById('shopPrize'):getText()), self)

  $hover:
    background-color: #666666AA
    border-color: #666666

  $pressed:
    background-color: #333333AA
    border-color: #333333

  $disabled:
    background-color: #330000AA
    border-color: #330000
    color: red

ShopButtonSale < ShopButton
  id: shopButtonSale
  image-source: /images/game/shop/sale
  image-rect: 370 3 45 42

ShopPrize < UIWidget
  id: shopPrize
  text-align: left
  text-offset: 23 4
  font: verdana-11px-italic
  image-source: /images/game/shop/prize
  image-rect: 0 0 19 18
  color: #BAE5A5
  anchors.left: parent.left
  anchors.right: parent.right
  anchors.bottom: parent.bottom
  margin-left: 55
  margin-bottom: 5
  phantom: true

ClanWindow < MainWindow
  size: 163 93
  @onEscape: self:destroy()

  Label
    text: Rank:
    width: 38
    anchors.top: parent.top
    anchors.left: parent.left
    margin-top: 2

  SpinBox
    id: spinBox
    step: 1
    width: 50
    anchors.top: parent.top
    anchors.left: prev.right
    minimum: 1
    maximum: 5
    @onValueChange: |
      if self:getValue() == 1 then
        prize = 1
      elseif self:getValue() == 2 then
        prize = 1
      elseif self:getValue() == 3 then
        prize = 1
      elseif self:getValue() == 4 then
        prize = 1
      elseif self:getValue() == 5 then
        prize = 1
      end
      self:getParent():getChildById('prize'):setText(prize)

  UIWidget
    id: prize
    text-align: left
    text-offset: 23 4
    font: verdana-11px-rounded
    image-source: /images/game/shop/prize
    image-rect: 0 0 19 18
    color: #9BD3F0
    anchors.verticalCenter: spinBox.verticalCenter
    anchors.left: spinBox.right
    anchors.right: parent.right
    margin-left: 3

  Button
    id: okButton
    text: Ok
    width: 64
    anchors.bottom: parent.bottom
    anchors.right: parent.right

  Button
    !text: tr('Cancel')
    width: 64
    anchors.bottom: parent.bottom
    anchors.left: parent.left
    @onClick: self:getParent():destroy()

MainWindow
  id: shopWindow
  size: 600 336
  image-source: /images/game/shop/window
  padding: 10
  @onEscape: hide()

  UIButton
    id: closeButton
    anchors.top: parent.top
    anchors.right: parent.right
    size: 23 22
    image-source: /images/game/shop/button
    image-clip: 0 0 23 22
    @onClick: hide()

    $hover:
      image-clip: 0 22 23 22

    $pressed:
      image-clip: 0 44 23 22

  ShopTabBarVertical
    id: shopTabBar
    size: 115 272
    anchors.top: parent.top
    anchors.left: parent.left

  Panel
    id: shopTabContent
    size: 456 229
    anchors.top: shopTabBar.top
    anchors.left: shopTabBar.right
    margin-top: 50
    margin-left: 10

  UIWidget
    id: emeralds
    text-align: left
    text-offset: 35 0
    font: sans-bold-16px-rounded
    image-source: /images/topbuttons/emerald_shop
    image-rect: 0 0 36 32
    anchors.left: prev.left
    anchors.right: parent.right
    anchors.bottom: parent.bottom
    phantom: true