Modification of the receipt.xml file

Using Store Operations Administrator I created a new table using this:

CREATE TABLE SrmMev

( srmmev_id int,

 line_01 varchar(10),

 line_02 varchar(10),

 line_03 varchar(50),

);

and put some values:

INSERT INTO SrmMev (srmmev_id, line_01, line_02, line_03) VALUES (1, 'text1', 'text2', 'text3')

I see this using: SELECT * FROM SrmValues, so it exists in database.

Now: I need to modify the receipt.xml file and I added the line as follow:

...

<ROW> "SrmMev:  " SrmMev.line_01 </ROW>

...

When receipt printed it gives me:

SrmMev:  0

instead of the right data.

What's wrong?