Horrible syntax error in CREATE TRIGGER statement

[gamcall]

Hi All,
Below is the syntax of a statement that is giving me
a message of "Invalid Column name: 'From ID' at the point
marked with an '*'. I have tried lots of ways of delimiting
the token for the field 'From ID' (no - I did _not_ design
this database, I just have to _work_ with it - pity me).
The trigger is to insert a record into another table based
on the contents of tables [Reservation Entry] & [Sales_Header]. What am I doing wrong?

T.I.A,
GAM


CREATE TRIGGER dbo.from_id_up
ON dbo.[Training$Reservation Entry]
FOR UPDATE AS
Declare @from_id char(20)

select @from_id = U.[From ID]
from [Training$Reservation Entry] R, [Training$UPDATED] U
where R.[Entry No.] = U.[Entry No.]

if (@@rowcount=1) and ( @from_id like 'PO%' )
and update ("From ID&quot
-- This is a new Purchase Order Reservation
-- insert an ot_line_item record
* insert into [ot_line_items]
(nav_item_no, nav_s_order_no, nav_s_order_seq,
nav_p_order_no, nav_p_order_seq, p_order_sent,
ebn_order_no, nav_cust_id)
select RE.[Item No.], RE.[For ID], RE.[For Ref. No.],
@from_id, RE.[From Ref. No.], RE.[Creation Date],
S.[OrderRequestHeaderID], S.[Bill_to_Customer_No]
from [Training$Reservation Entry] RE,
[Training$Sales_Header] S
where RE.[From ID] = @from_id
and RE.[From ID] = S.[From ID]
and RE.[For ID] = S.[EBN Reference No]
and RE.[Cancelled or Changed By] = ' '