SQL Cursor - How to concatenate a value

I have a SQL Stored Procedure that validates a form.  One section of the validation needs to verify a keyword(s) was selected.  Depending on the users form there could be 3 to 25 keywords to confirm.

The idea is that @KEYWORDCATEGORY1 and @KEYWORDCATEGORY1_REQ need to increment to @KEYWORDCATEGORY2, @KEYWORDCATEGORY3 and @KEYWORDCATEGORY2_REQ, @KEYWORDCATEGORY3_REQ and so on.  

I am asuming I can do this by concatenating a variable  to @KEYWORDCATEGORY such as @KEYWORDCATEGORY3 + @VALUE or @KEYWORDCATEGORY+ @VALUE + '_REQ' where @VALUE woud start at 1.  Can this be done?



/*VERIFY KEYWORDS*/
DECLARE KEYWORDS_CRSR CURSOR STATIC LOCAL FOR
SELECT
           [KeywordId]
FROM
           [dbo].[TableName]
WHERE
           [User_Id] = @ID

OPEN KEYWORDS_CRSR

If @@CURSOR_ROWS > 0
BEGIN
     FETCH NEXT FROM KEYWORDS_CRSR INTO
                  @KEYWORDCATEGORY1

WHILE @@FETCH_STATUS = 0
BEGIN

    /*@KEYWORDCATEGORY1_REQ*/
    IF @KEYWORDCATEGORY1_REQ = 1
    BEGIN
             IF @KEYWORDCATEGORY1 IS NULL
             BEGIN
           SET @ACCEPTED = 0                  
                       SET @RESPONSE = @RESPONSE + '-A Keyword for Category l must be selected.<br />'
            END
             END

             FETCH NEXT FROM KEYWORDS_CRSR INTO
                          @KEYWORDCATEGORY1
END


THANKS!!