diff --git a/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorFilterGroup.cs b/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorFilterGroup.cs
index 327645f9e..1b05f742a 100644
--- a/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorFilterGroup.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorFilterGroup.cs
@@ -5,7 +5,7 @@ namespace BotSharp.Abstraction.VectorStorage.Models;
 public class VectorFilterGroup
 {
     [JsonPropertyName("filters")]
-    public List<VectorFilterSubGroup>? Filters { get; set; }
+    public IEnumerable<VectorFilterSubGroup>? Filters { get; set; }
 
     [JsonPropertyName("logical_operator")]
     public string LogicalOperator { get; set; } = "or";
@@ -14,7 +14,7 @@ public class VectorFilterGroup
 public class VectorFilterSubGroup
 {
     [JsonPropertyName("operands")]
-    public List<VectorFilterOperand> Operands { get; set; } = [];
+    public IEnumerable<VectorFilterOperand> Operands { get; set; } = [];
 
     [JsonPropertyName("logical_operator")]
     public string LogicalOperator { get; set; } = "or";
@@ -52,7 +52,7 @@ public class VectorFilterRange
     public string Key { get; set; } = null!;
 
     [JsonPropertyName("conditions")]
-    public List<VectorFilterRangeCondition> Conditions { get; set; } = [];
+    public IEnumerable<VectorFilterRangeCondition> Conditions { get; set; } = [];
 
     [JsonPropertyName("data_type")]
     public VectorPayloadDataType DataType { get; set; } = VectorPayloadDataType.String;
@@ -60,10 +60,11 @@ public class VectorFilterRange
     public override string ToString()
     {
         var str = $"Data type: {DataType};";
-        Conditions?.ForEach(x =>
+
+        foreach (var condition in Conditions)
         {
-            str += $"{Key} {x.Operator} {x.Value};";
-        });
+            str += $"{Key} {condition.Operator} {condition.Value};";
+        }
         return str;
     }
 }
diff --git a/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorPayloadValue.cs b/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorPayloadValue.cs
index bcc70ef7f..e68fff8ed 100644
--- a/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorPayloadValue.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/VectorStorage/Models/VectorPayloadValue.cs
@@ -1,4 +1,5 @@
 using BotSharp.Abstraction.VectorStorage.Enums;
+using Newtonsoft.Json.Linq;
 
 namespace BotSharp.Abstraction.VectorStorage.Models;
 
@@ -26,33 +27,35 @@ public override string ToString()
         return $"{DataValue} ({DataType})";
     }
 
-    public static VectorPayloadValue BuildStringValue(string data)
-    {
-        return new(data, VectorPayloadDataType.String);
-    }
-
-    public static VectorPayloadValue BuildIntegerValue(long data)
-    {
-        return new(data, VectorPayloadDataType.Integer);
-    }
-
-    public static VectorPayloadValue BuildDoubleValue(double data)
-    {
-        return new(data, VectorPayloadDataType.Double);
-    }
-
-    public static VectorPayloadValue BuildBooleanValue(bool data)
-    {
-        return new(data, VectorPayloadDataType.Boolean);
-    }
-
-    public static VectorPayloadValue BuildDatetimeValue(DateTime data)
-    {
-        return new(data, VectorPayloadDataType.Datetime);
-    }
-
-    public static VectorPayloadValue BuildUnkownValue(object data)
-    {
-        return new(data, VectorPayloadDataType.Unknown);
-    }
+    public static VectorPayloadValue BuildStringValue(string data) => new(data, VectorPayloadDataType.String);
+    public static VectorPayloadValue BuildIntegerValue(long data) => new(data, VectorPayloadDataType.Integer);
+    public static VectorPayloadValue BuildIntegerValue(int data) => new(data, VectorPayloadDataType.Integer);
+    public static VectorPayloadValue BuildIntegerValue(short data) => new(data, VectorPayloadDataType.Integer);
+    public static VectorPayloadValue BuildIntegerValue(byte data) => new(data, VectorPayloadDataType.Integer);
+    public static VectorPayloadValue BuildDoubleValue(double data) => new(data, VectorPayloadDataType.Double);
+    public static VectorPayloadValue BuildDoubleValue(float data) => new(data, VectorPayloadDataType.Double);
+    public static VectorPayloadValue BuildBooleanValue(bool data) => new(data, VectorPayloadDataType.Boolean);
+    public static VectorPayloadValue BuildDatetimeValue(DateTime data) => new(data, VectorPayloadDataType.Datetime);
+    public static VectorPayloadValue BuildUnkownValue(object data) => new(data, VectorPayloadDataType.Unknown);
+
+
+    public static explicit operator VectorPayloadValue(string data) => VectorPayloadValue.BuildStringValue(data);
+    public static explicit operator VectorPayloadValue(long data) => VectorPayloadValue.BuildIntegerValue(data);
+    public static explicit operator VectorPayloadValue(int data) => VectorPayloadValue.BuildIntegerValue(data);
+    public static explicit operator VectorPayloadValue(short data) => VectorPayloadValue.BuildIntegerValue(data);
+    public static explicit operator VectorPayloadValue(byte data) => VectorPayloadValue.BuildIntegerValue(data);
+    public static explicit operator VectorPayloadValue(double data) => VectorPayloadValue.BuildDoubleValue(data);
+    public static explicit operator VectorPayloadValue(float data) => VectorPayloadValue.BuildDoubleValue(data);
+    public static explicit operator VectorPayloadValue(bool data) => VectorPayloadValue.BuildBooleanValue(data);
+    public static explicit operator VectorPayloadValue(DateTime data) => VectorPayloadValue.BuildDatetimeValue(data);
+
+    public static implicit operator string(VectorPayloadValue value) => value.DataValue?.ToString() ?? string.Empty;
+    public static implicit operator long(VectorPayloadValue value) => long.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
+    public static implicit operator int(VectorPayloadValue value) => int.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
+    public static implicit operator short(VectorPayloadValue value) => short.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
+    public static implicit operator byte(VectorPayloadValue value) => byte.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
+    public static implicit operator double(VectorPayloadValue value) => double.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
+    public static implicit operator float(VectorPayloadValue value) => float.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
+    public static implicit operator bool(VectorPayloadValue value) => bool.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
+    public static implicit operator DateTime(VectorPayloadValue value) => DateTime.TryParse(value.DataValue?.ToString(), out var res) ? res : default;
 }
diff --git a/src/Plugins/BotSharp.Plugin.Qdrant/QdrantDb.cs b/src/Plugins/BotSharp.Plugin.Qdrant/QdrantDb.cs
index 56a0fd44e..41826c370 100644
--- a/src/Plugins/BotSharp.Plugin.Qdrant/QdrantDb.cs
+++ b/src/Plugins/BotSharp.Plugin.Qdrant/QdrantDb.cs
@@ -507,6 +507,7 @@ public async Task<bool> DeleteCollectionShapshot(string collectionName, string s
 
 
     #region Private methods
+    #region Query filter
     private Filter? BuildQueryFilter(IEnumerable<VectorFilterGroup>? filterGroups)
     {
         if (filterGroups.IsNullOrEmpty())
@@ -783,6 +784,7 @@ public async Task<bool> DeleteCollectionShapshot(string collectionName, string s
 
         return fieldCondition;
     }
+    #endregion
 
     private WithPayloadSelector? BuildPayloadSelector(IEnumerable<string>? payloads)
     {