diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/GenerateProxyCommand.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/GenerateProxyCommand.cs
index 788ffb4436..f2941c9ce8 100644
--- a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/GenerateProxyCommand.cs
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/GenerateProxyCommand.cs
@@ -294,7 +294,7 @@ namespace Volo.Abp.Cli.Commands
                                 if (firstType == "List" && !File.Exists(secondTypeModelPath))
                                 {
                                     secondType = "any";
-                                }
+                                } 
 
                                 serviceFileText.AppendLine(
                                     firstType == "List"
@@ -322,13 +322,15 @@ namespace Volo.Abp.Cli.Commands
                                     "String" => "string",
                                     "IActionResult" => "void",
                                     "ActionResult" => "void",
+                                    "Int64" => "number",
+                                    "Int32" => "number",
                                     _ => type
-                                };
+                                }; 
 
                                 serviceFileText.AppendLine(
                                     $" {actionName}({parametersText}): Observable<{type}> {{");
 
-                                if (type != "void" && type != "string")
+                                if (type != "void" && type != "string" && type != "number")
                                 {
                                     secondTypeList.Add(type);
                                 }
@@ -503,6 +505,11 @@ namespace Volo.Abp.Cli.Commands
 
             var path = output + $"{outputPrefix}/{rootPath}/{controllerPathName}/models/{typeModelName}";
 
+            if (File.Exists(path))
+            {
+                return null;
+            }
+
             var modelFileText = new StringBuilder();
 
             var baseType = (string)type["baseType"];