How to read an XML in a stored proc and store it in the table

Declare @Xml XML =
'<documentelement>
	<articletable>
		<articleid>1</articleid>
		<title>article one</title>
		<contents>article one contents </contents>
	</articletable>

	<articletable>
		<articleid>2</articleid>
		<title>article two</title>
		<contents>article two contents </contents>
	</articletable>

	<articletable>
		<articleid>3</articleid>
		<title>article three</title>
		<contents>article three contents</contents>
	</articletable>

</documentelement>'

Select t.c.value('articleid[1]','varchar(4)') [ArticleId],
	   t.c.value('title[1]','varchar(40)')[Title],
	   t.c.value('contents[1]','varchar(100)')[Contents]
From @XML.nodes('/documentelement/articletable') as t(c)

ArticleId	Title	         Contents
---------     --------           ----------
1	      article one	article one contents 
2	      article two	article two contents 
3	      article three	article three contents

Create Proc Test
	@XML XMl,
	@TableName Varchar(100)
as
Begin
    SET NOCOUNT ON;
    Declare @Sql varchar(Max)
	
    Select t.c.value('articleID[1]','Int') [ArticleId],
           t.c.value('title[1]','varchar(40)')[Title],
	   t.c.value('contents[1]','varchar(100)')[Contents] 
    into #Temp
    From  @XML.nodes('/DocumentElement/articletable') as t(c)

    Set @Sql = 'Insert into '+@TableName +' Select * From #Temp' 
    Exec (@Sql)

    Select 'Data Succesfully Inserted into '+ @TableName [Result]
End

CREATE PROCEDURE [dbo].[mySP]    
(    
 @XMLDoc xml
 
)    
AS     
    
BEGIN    
          
SET NOCOUNT ON    

        DECLARE @XMLDocPointer int       
        
                
        EXEC sp_xml_preparedocument @XMLDocPointer OUTPUT, @XMLDoc  
        
        INSERT INTO MyTable
        SELECT *    
        FROM OPENXML(@XMLDocPointer,'/RootNode/ParentNode',2)     
        WITH ( Column1 VARCHAR(10),Column2 VARCHAR(10))
          
SET NOCOUNT OFF    
END