SP Is Not Reading The Table Name?

-- drop proc SP_Trio_Popul_Stg_Tbls1
CREATE PROC [dbo].[SP_Trio_Popul_Stg_Tbls1] @tableName varchar(20) AS
-- alter PROC [dbo].[SP_Trio_Popul_Stg_Tbls1] @tableName varchar(20) AS


declare @sql varchar (20)

set @sql = 'INSERT INTO dbo.Name_Pharse_Stg_Tbl1 (nm_last)
SELECT nm_name FROM dbo.' + quotename(@tableName)

print @sql
exec (@sql)

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exec SP_Trio_Popul_Stg_Tbls1 '00485'
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INSERT INTO dbo.Name
Server: Msg 170, Level 15, State 1, Line 1
Line 1: Incorrect syntax near 'Name'.


im trying to run this SP but im getting an error. Can you help me to fix it?

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gongxia649
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