How Do You Pass Variables To A Statement Plz Help

iam trying to pass variable to a statement to grab data to from one DB table and pitch it in the same table in another DB base on evaluation like a where clause. but its not working what am i doing rong

here is the code


if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[ClientComment]')
and OBJECTPROPERTY(id, N'IsUserTable') = 1)

Declare @BDFR varchar(20), @BDTO varchar(20), @EQID varchar(20), @TABLEDESC varchar(20), @DBO varchar(20)
set @TABLEDESC = 'ClientComment'
set @DBO = '.dbo.'
set @BDFR = 'Commander' + @DBO + @TABLEDESC
set @BDTO = 'Test_Commander'+ @DBO + @TABLEDESC
set @EQID = '80_300_113'
insert into @BDTO
select from @BDFR where Eqid = @EQID