diff --git a/playground/init_lazy.lua b/playground/init_lazy.lua
index 786d57e..aa55344 100644
--- a/playground/init_lazy.lua
+++ b/playground/init_lazy.lua
@@ -47,8 +47,8 @@ local function load_plugins()
         'theHamsta/nvim-dap-virtual-text',
         'ray-x/guihua.lua',
       },
-      config = function()
-        require('go').setup({
+      config = true,
+      opts = {
           verbose = true,
           lsp_cfg = {
             handlers = {
@@ -59,8 +59,7 @@ local function load_plugins()
               ),
             },
           }, -- false: do nothing
-        })
-      end,
+      }
     },
   }
 end
diff --git a/playground/sampleApp/pkg/findAllSubStr.go b/playground/sampleApp/pkg/findAllSubStr.go
index 54b4d14..c504298 100644
--- a/playground/sampleApp/pkg/findAllSubStr.go
+++ b/playground/sampleApp/pkg/findAllSubStr.go
@@ -5,6 +5,7 @@ import (
 	"sync"
 )
 
+// FindAllSubStr function  
 func FindAllSubStr(stack, niddle string) (result []int) {
 	stack = strings.ToLower(stack)
 	niddle = strings.ToLower(niddle)
@@ -17,6 +18,7 @@ func FindAllSubStr(stack, niddle string) (result []int) {
 	return result
 }
 
+// FindSubStr function  
 func FindSubStr(stack, niddle string) (result int) {
 	stack = strings.ToLower(stack)
 	niddle = strings.ToLower(niddle)