syntax error in sql server store prodedure

USE [SCJ]
GO
/****** Object:  StoredProcedure [dbo].[spGetCHLDETAIL1]    Script Date: 03/11/2014 12:43:03 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:	<author,,name>
-- Create date: <create>
-- Description:	<description,,>
-- =============================================
ALTER PROCEDURE [dbo].[spMODIFY] 
	-- Add the parameters for the stored procedure here
	 @DistrictID VARCHAR(250),
    
     @CHILDNAME VARCHAR(50)  
AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;
	DECLARE
	@ChildTblName AS VARCHAR (125), 
    @FamilyTblName AS VARCHAR (125), 
   
     @vQuery AS VARCHAR (max);
   
     
    SET @ChildTblName = '[' + @DistrictID + 'Child_D' + ']'
    SET @FamilyTblName = '[' + @DistrictID + 'Family_D' + ']'

    -- Insert statements for procedure here
	   SET @vQuery = 'UPDATE Child SET Child.cname='+@CHILDNAME+' 
    FROM ' + @ChildTblName + ' As Child'; 
  
   

 EXEC(@vQuery)
 
END