additional trigger of save function

src/accessories/AttachmentHelper.ttslua

@@ -127,10 +127,7 @@ function onDrop(playerColor)
   for _, bgInfo in ipairs(BACKGROUNDS) do
     if bgInfo.title == syncName then
       printToColor("Background for '" .. syncName .. "' loaded!", playerColor, "Green")
-      local customInfo = self.getCustomObject()
-      customInfo.diffuse = bgInfo.url
-      self.setCustomObject(customInfo)
-      self.reload()
+      updateImage(bgInfo.url)
       return
     end
   end
@@ -147,13 +144,19 @@ function selectImage(color)
 
   -- prompt user to select option
   Player[color].showOptionsDialog("Select image:", options, 1, function(_, optionIndex)
-    local customInfo = self.getCustomObject()
-    customInfo.diffuse = BACKGROUNDS[optionIndex].url
-    self.setCustomObject(customInfo)
-    self.reload()
+    updateImage(BACKGROUNDS[optionIndex].url)
   end)
 end
 
+-- sets background to the provided URL
+function updateImage(url)
+  self.script_state = JSON.encode({ cardsInBag, showCost, showIcons })
+  local customInfo = self.getCustomObject()
+  customInfo.diffuse = url
+  self.setCustomObject(customInfo)
+  self.reload()
+end
+
 -- only allow cards to enter, split decks and reject other objects
 function onObjectEnterContainer(container, object)
   if container ~= self then return end