error sql 2005in dynamic query

Question

alter procedure prcEmpView

(

  @Wherecondition nvarchar(4000)

)

as

begin

declare @sqlquery nvarchar(4000)

set @sqlquery=

 'select

         vEmpName,

         vAddress,

         vPhone,

         vEmail

 from  tblEmployee

'+@Wherecondition

 execute sp_execute @sqlquery

 end

pls correct as soon as possible