так лучше

src/main/java/app/controllers/other/ExternalVIPController.java

@@ -31,11 +31,11 @@ public class ExternalVIPController {
                                  @RequestParam int amount,
                                  @RequestParam String service,
                                  @RequestParam(required = false, defaultValue = "") String extra) {
-        vipService.addVIP(
+        int result = vipService.addVIP(
                 SteamIDConverter.getSteamID(steam),
                 amount,
                 VipGiveMethod.valueOf(service.toUpperCase()),
                 extra);
-        return new ResponseEntity("append",HttpStatus.OK);
+        return new ResponseEntity(result, HttpStatus.OK);
     }
 }

src/main/java/app/services/db/VIPService.java

@@ -74,8 +74,8 @@ public class VIPService {
         return permitionService.getPermition(steamID);
     }
 
-    public void addVIP(SteamID steamID, int amount, VipGiveMethod vipGiveMethod, String extra) {
+    public int addVIP(SteamID steamID, int amount, VipGiveMethod vipGiveMethod, String extra) {
-        int result = 0;
+        int result = 1;
         switch (vipGiveMethod){
             case FREE -> {
                 permitionService.addFreeVIP(steamID, amount);
@@ -99,6 +99,7 @@ public class VIPService {
             }
         }
         serverService.executeRCONOnAllServers("sm_reloadadmins");
+        return result;
     }
 
     public void publishWebhook(SteamID steamID, int amount, String status, boolean free) {