diff --git a/Runtime/GuruConsent/Runtime/Script/Consent/GoogleDMAHelper.cs b/Runtime/GuruConsent/Runtime/Script/Consent/GoogleDMAHelper.cs
index 9ed2d97..3dcb5b3 100644
--- a/Runtime/GuruConsent/Runtime/Script/Consent/GoogleDMAHelper.cs
+++ b/Runtime/GuruConsent/Runtime/Script/Consent/GoogleDMAHelper.cs
@@ -1,4 +1,6 @@
 
+using System;
+
 namespace Guru
 {
     using System.Collections.Generic;
@@ -15,6 +17,15 @@ namespace Guru
     public class GoogleDMAHelper
     {
         public static readonly bool UsingDelayAppMeasurement = false;
+
+        public static List<string> PurposesRules = new List<string>
+        {
+            "0",   // 1
+            "",    // *
+            "2,3",  // 3&4
+            "0,6"   // 1&7
+        }; 
+        
         
         /// <summary>
         /// Set DMA status
@@ -49,27 +60,7 @@ namespace Guru
             }
             
             // build an dict<type, status> for record consent data
-            Dictionary<ConsentType, ConsentStatus> consentData = new Dictionary<ConsentType, ConsentStatus>()
-            {
-                { ConsentType.AdStorage, ConsentStatus.Denied },
-                { ConsentType.AnalyticsStorage, ConsentStatus.Denied },
-                { ConsentType.AdPersonalization, ConsentStatus.Denied },
-                { ConsentType.AdUserData, ConsentStatus.Denied },
-            };
-
-            // purpose 2,3,4,5,9 granted => adStorage, adPersonalization, adUserData granted 
-            if (purposes[1] && purposes[2] && purposes[3] && purposes[4] && purposes[8])
-            {
-                consentData[ConsentType.AdStorage] = ConsentStatus.Granted;
-                consentData[ConsentType.AdPersonalization] = ConsentStatus.Granted;
-                consentData[ConsentType.AdUserData] = ConsentStatus.Granted;
-            }
-
-            // purpose 1, 7 granted => analyticsStorage granted 
-            if (purposes[0] && purposes[6])
-            {
-                consentData[ConsentType.AnalyticsStorage] = ConsentStatus.Granted;
-            }
+            Dictionary<ConsentType, ConsentStatus> consentData = ApplyPurposesRules(purposes);
             
             // build result data for guru analytics
             string result = "0000";
@@ -140,5 +131,59 @@ namespace Guru
             return result;
         }
 
+
+        private static Dictionary<ConsentType, ConsentStatus> ApplyPurposesRules(bool[] purposes)
+        {
+            Dictionary<ConsentType, ConsentStatus> consentData = new Dictionary<ConsentType, ConsentStatus>()
+            {
+                { ConsentType.AdStorage, ConsentStatus.Denied },
+                { ConsentType.AnalyticsStorage, ConsentStatus.Denied },
+                { ConsentType.AdPersonalization, ConsentStatus.Denied },
+                { ConsentType.AdUserData, ConsentStatus.Denied },
+            };
+
+            for (int i = 0; i < PurposesRules.Count; i++)
+            {
+                ConsentType type = ConsentType.AdStorage;
+                switch (i)
+                {
+                    default: type = ConsentType.AdStorage; break;
+                    case 1: type = ConsentType.AnalyticsStorage; break;
+                    case 2: type = ConsentType.AdPersonalization; break;
+                    case 3: type = ConsentType.AdUserData; break;
+                }
+
+                bool granted = true;
+                if (string.IsNullOrEmpty(PurposesRules[i]))
+                {
+                    // null pass directly.
+                }
+                else
+                {
+                    // parse all the single rule   
+                    int[] rule = Array.ConvertAll(PurposesRules[i].Split(','), s =>
+                    {
+                        if(string.IsNullOrEmpty(s)) return -1;
+                        int.TryParse(s, out var v);
+                        return v;
+                    });
+                    for (int j = 0; j < rule.Length; j++)
+                    {
+                        var idx = rule[j];
+                        if (idx < 0 || idx >= purposes.Length || !purposes[rule[j]])
+                        {
+                            granted = false;
+                            break;
+                        }
+                    }
+                }
+                consentData[type] = granted ? ConsentStatus.Granted : ConsentStatus.Denied;
+            }
+            
+            return consentData;
+        }
+
+
+
     }
 }
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