diff --git a/go.mod b/go.mod
index 7ae42252..2c473f7b 100644
--- a/go.mod
+++ b/go.mod
@@ -6,13 +6,13 @@ require (
 	github.com/gopherjs/gopherjs v1.18.0-beta1
 	github.com/peterh/liner v1.2.2
 	github.com/stretchr/testify v1.8.0
+	golang.org/x/exp v0.0.0-20240604190554-fc45aab8b7f8
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/mattn/go-runewidth v0.0.3 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	golang.org/x/exp v0.0.0-20240604190554-fc45aab8b7f8 // indirect
 	golang.org/x/sys v0.12.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/types.go b/types.go
index 8734890e..0812ab52 100644
--- a/types.go
+++ b/types.go
@@ -96,10 +96,9 @@ type RollConfig struct {
 }
 
 type customDiceItem struct {
-	expr     string
-	callback func(ctx *Context, groups []string) *VMValue
-
-	parse func(ctx *Context, p *parser)
+	// expr     string
+	// callback func(ctx *Context, groups []string) *VMValue
+	// parse func(ctx *Context, p *parser)
 
 	// 该怎样写呢？似乎将一些解析相关的struct暴露出去并不合适
 	// 这里我有三个选项，第一种是创建一种更简单的语法进行编译：例如