diff --git a/src/core/RESTRequest4D.Request.Params.pas b/src/core/RESTRequest4D.Request.Params.pas
index afd1864..65f8ed1 100644
--- a/src/core/RESTRequest4D.Request.Params.pas
+++ b/src/core/RESTRequest4D.Request.Params.pas
@@ -12,7 +12,8 @@   TRequestParams = class(TInterfacedObject, IRequestParams)
     function Clear: IRequestParams;
     function Add(const AName, AValue: string; const AKind: TRESTRequestParameterKind = TRESTRequestParameterKind.pkQUERY): IRequestParams; overload;
     function Add(const AName: string; const AValue: Currency; const AKind: TRESTRequestParameterKind = TRESTRequestParameterKind.pkQUERY): IRequestParams; overload;
-    function Add(const AName: string; const AValue: TStream): IRequestParams; overload;
+    function AddFile(const AName: string; const AValue: TStream): IRequestParams;
+    function AddText(const AName, AValue: string; const AContentType: TRESTContentType = TRESTContentType.ctAPPLICATION_JSON): IRequestParams;
   public
     constructor Create(const ARESTRequest: TRESTRequest);
     destructor Destroy; override;
@@ -39,7 +40,7 @@ function TRequestParams.Add(const AName: string; const AValue: Currency; const A
   Result := Self.Add(AName, CurrToStr(AValue), AKind);
 end;
 
-function TRequestParams.Add(const AName: string; const AValue: TStream): IRequestParams;
+function TRequestParams.AddFile(const AName: string; const AValue: TStream): IRequestParams;
 begin
   Result := Self;
   if not Assigned(AValue) then
@@ -54,6 +55,18 @@ function TRequestParams.Add(const AName: string; const AValue: TStream): IReques
   end;
 end;
 
+function TRequestParams.AddText(const AName, AValue: string; const AContentType: TRESTContentType = TRESTContentType.ctAPPLICATION_JSON): IRequestParams;
+begin
+  Result := Self;
+  with FRESTRequest.Params.AddItem do
+  begin
+    Name := AName;
+    Value := AValue;
+    Kind := TRESTRequestParameterKind.pkREQUESTBODY;
+    ContentType := AContentType;
+  end;
+end;
+
 function TRequestParams.Clear: IRequestParams;
 var
   I: Integer;
@@ -76,4 +89,4 @@ destructor TRequestParams.Destroy;
   inherited;
 end;
 
-end.
+end.
\ No newline at end of file
diff --git a/src/interfaces/RESTRequest4D.Request.Params.Intf.pas b/src/interfaces/RESTRequest4D.Request.Params.Intf.pas
index ce2fcdb..f817a1d 100644
--- a/src/interfaces/RESTRequest4D.Request.Params.Intf.pas
+++ b/src/interfaces/RESTRequest4D.Request.Params.Intf.pas
@@ -56,7 +56,20 @@ interface
     /// </remarks>
     function Add(const AName: string; const AValue: Currency; const AKind: TRESTRequestParameterKind = TRESTRequestParameterKind.pkQUERY): IRequestParams; overload;
     /// <summary>
-    ///   Adds a new parameter.
+    ///   Adds a new file multi part param.
+    /// </summary>
+    /// <param name="AName">
+    ///   Name of the parameter.
+    /// </param>
+    /// <param name="AValue">
+    ///   Parameter value.
+    /// </param>
+    /// <returns>
+    ///   Returns the instance itself following the fluent API pattern.
+    /// </returns>
+    function AddFile(const AName: string; const AValue: TStream): IRequestParams;
+    /// <summary>
+    ///   Adds a new text multi part param.
     /// </summary>
     /// <param name="AName">
     ///   Name of the parameter.
@@ -67,9 +80,9 @@ interface
     /// <returns>
     ///   Returns the instance itself following the fluent API pattern.
     /// </returns>
-    function Add(const AName: string; const AValue: TStream): IRequestParams; overload;
+    function AddText(const AName: string; const AValue: string; const AContentType: TRESTContentType = TRESTContentType.ctAPPLICATION_JSON): IRequestParams;
   end;
 
 implementation
 
-end.
+end.
\ No newline at end of file