diff --git a/config/_project_json.yaml b/config/_project_json.yaml
index 9f17462..bccabef 100644
--- a/config/_project_json.yaml
+++ b/config/_project_json.yaml
@@ -1,4 +1,4 @@
-description: "${func:split('title' ,' - ')[0]} Live 2D\n${func:split('title' ,' - ')[1]} Live 2D\nThe model is extracted from game with Spine support.\n模型来自游戏内提取，支持Spine\nPlease set your FPS target in Wallpaper Engine > Settings > Performance > FPS\n请在 Wallpaper Engine > 设置 > 性能 > FPS 下设置FPS\n\nLive preview on: https://arknights.halyul.dev/${var:link}\nGithub: https://github.com/Halyul/aklive2d"
+description: !match "${replaceFunc:split('config', 'title' ,' - ')[0]} Live 2D\n${replaceFunc:split('config', 'title' ,' - ')[1]} Live 2D\nThe model is extracted from game with Spine support.\n模型来自游戏内提取，支持Spine\nPlease set your FPS target in Wallpaper Engine > Settings > Performance > FPS\n请在 Wallpaper Engine > 设置 > 性能 > FPS 下设置FPS\n\nLive preview on: https://arknights.halyul.dev/${var:link}\nGithub: https://github.com/Halyul/aklive2d"
 localization:
   en-us:
     ui_custom_background: Custom Background
@@ -67,11 +67,11 @@ properties:
     value: 
      text: ui_default_background
      type: combo
-     value: this.#assets.backgrounds[0]
+     value: !match ${directFunc:getVar('assets', "backgrounds")[0]}
      fraction: false
      max: 100
      min: 0
-     options:
+     options: !match ${directFunc:getVar('assets', "backgroundOptions")}
   - key: background
     value: 
      text: ui_custom_background
@@ -86,7 +86,7 @@ properties:
     value: 
      text: ui_position_padding_left
      type: slider
-     value: 
+     value: !match ${directFunc:getVar('config', "viewport_left")}
      condition: position.value == true
      fraction: false
      max: 100
@@ -95,7 +95,7 @@ properties:
     value: 
      text: ui_position_padding_right
      type: slider
-     value: 
+     value: !match ${directFunc:getVar('config', "viewport_right")}
      condition: position.value == true
      fraction: false
      max: 100
@@ -104,7 +104,7 @@ properties:
     value: 
      text: ui_position_padding_top
      type: slider
-     value: 
+     value: !match ${directFunc:getVar('config', "viewport_top")}
      condition: position.value == true
      fraction: false
      max: 100
@@ -113,7 +113,7 @@ properties:
     value: 
      text: ui_position_padding_bottom
      type: slider
-     value: 
+     value: !match ${directFunc:getVar('config', "viewport_bottom")}
      condition: position.value == true
      fraction: false
      max: 100
diff --git a/libs/content_processor.js b/libs/content_processor.js
index 4a51a43..170b737 100644
--- a/libs/content_processor.js
+++ b/libs/content_processor.js
@@ -1,24 +1,20 @@
 export default class Matcher {
   #start
   #end
-  #content
   #reExp
   #config
+  #assets
 
-  constructor(content, start, end, config) {
+  constructor(start, end, config, assets) {
     this.#start = start
     this.#end = end
-    this.#content = content
     this.#reExp = new RegExp(`\\${start}.+?${end}`, 'g')
     this.#config = config
+    this.#assets = assets
   }
 
-  match() {
-    return this.#content.match(this.#reExp)
-  }
-
-  process() {
-    const matches = this.match()
+  get result() {
+    const matches = this.content.match(this.#reExp)
     if (matches !== null) {
       matches.forEach((match) => {
         const matchTypeName = match.replace(this.#start, '').replace(this.#end, '')
@@ -33,40 +29,55 @@ export default class Matcher {
               } catch (e) {
                 throw new Error(`Cannot find variable ${name}.`)
               }
-              this.#content = this.#content.replace(match, replaceValue)
+              this.content = this.content.replace(match, replaceValue)
             })
             break
-          case 'func':
+          case 'replaceFunc':
             try {
-              this.#content = this.#content.replace(match, (new Function('Evalable', 'config', `return new Evalable(config).${name}`))(Evalable, this.#config))
+              this.content = this.content.replace(match, (new Function('Evalable', 'config', 'assets', `return new Evalable(config, assets).${name}`))(Evalable, this.#config, this.#assets))
             } catch (e) {
               throw new Error(e)
             }
             break
+          case 'directFunc':
+            this.content = (new Function('Evalable', 'config', 'assets', `return new Evalable(config, assets).${name}`))(Evalable, this.#config, this.#assets)
+            break
           default:
             throw new Error(`Cannot find type ${type}.`)
         }
       })
     }
-    return this.#content
+    return this.content
   }
 }
 
 class Evalable {
   #config
+  #assets
 
-  constructor(config) {
+  constructor(config, assets) {
     this.#config = config
+    this.#assets = assets
   }
 
-  split(varName, separator) {
+  split(location, varName, separator) {
+    return this.#step(location, varName).split(separator)
+  }
+
+  getVar(location, varName) {
+    return this.#step(location, varName)
+  }
+
+  #step(location, varName) {
+    let content = this.#config
     varName.split("->").forEach((item) => {
       try {
-        this.#config = this.#config[item]
+        if (location === 'assets') content = this.#assets
+        content = content[item]
       } catch (e) {
-        throw new Error(`Cannot split ${varName} with separator ${separator}.`)
+        throw new Error(`Cannot step ${varName}.`)
       }
     })
-    return this.#config.split(separator)
+    return content
   }
 }
\ No newline at end of file
diff --git a/libs/project_json.js b/libs/project_json.js
index 7160108..4f83206 100644
--- a/libs/project_json.js
+++ b/libs/project_json.js
@@ -16,12 +16,29 @@ export default class ProjectJson {
     this.#operatorSourceFolder = path.join(__dirname, __config.folder.operator)
     this.#operatorShareFolder = operatorShareFolder
     this.#assets = assets
-    this.#template = this.#processYAML(readYAML(path.join(__dirname, 'config', '_project_json.yaml')))
   }
     
   async load() {
     // load json from file
     this.#json = JSON.parse(await readFile(this.#getPath()))
+    const matcher = new Matcher('${', '}', __config.operators[this.#operatorName], {
+      ...this.#assets,
+      backgroundOptions: this.#assets.backgrounds.map((b) => {
+        return {
+          "label": b,
+          "value": b
+        }
+      })
+    })
+    const match = {
+      identify: value => value.startsWith('!match'),
+      tag: '!match',
+      resolve(str) {
+        matcher.content = str
+        return matcher.result
+      }
+    }
+    this.#template = readYAML(path.join(__dirname, 'config', '_project_json.yaml'), [match])
     this.#process()
     return this.#json
   }
@@ -52,59 +69,6 @@ export default class ProjectJson {
     }
   }
 
-  #processYAML(template) {
-    const matcher = new Matcher(template.description, '${', '}', __config.operators[this.#operatorName])
-    if (matcher.match() !== null) {
-      template.description = matcher.process()
-    }
-    const replacePropertyPairs = [
-      {
-        key: "defaultbackground",
-        value: {
-          value: this.#assets.backgrounds[0],
-          options: this.#assets.backgrounds.map((b) => {
-            return {
-              "label": b,
-              "value": b
-            }
-          })
-        }
-      },
-      {
-        key: "paddingleft",
-        value: {
-          value: __config.operators[this.#operatorName].viewport_left
-        },
-      },
-      {
-        key: "paddingright",
-        value: {
-          value: __config.operators[this.#operatorName].viewport_right
-        },
-      },
-      {
-        key: "paddingtop",
-        value: {
-          value: __config.operators[this.#operatorName].viewport_top
-        },
-      },
-      {
-        key: "paddingbottom",
-        value: {
-          value: __config.operators[this.#operatorName].viewport_bottom
-        },
-      },
-    ]
-    replacePropertyPairs.forEach((pair) => {
-      const property = template.properties.find((p) => p.key === pair.key)
-      property.value = {
-        ...property.value,
-        ...pair.value
-      }
-    })
-    return template
-  }
-
   get #properties() {
     const properties = this.#template.properties
     const output = {}
diff --git a/libs/yaml.js b/libs/yaml.js
index 99b178e..ec65547 100644
--- a/libs/yaml.js
+++ b/libs/yaml.js
@@ -2,7 +2,7 @@ import path from 'path'
 import { parse } from 'yaml'
 import fs from 'fs'
 
-export function read(file_dir) {
+export function read(file_dir, customTags = []) {
     const include = {
         identify: value => value.startsWith('!include'),
         tag: '!include',
@@ -14,6 +14,6 @@ export function read(file_dir) {
     }
     const file = fs.readFileSync(file_dir, 'utf8')
     return parse(file, {
-        customTags: [include],
+        customTags: [include, ...customTags],
     })
 }
\ No newline at end of file