Unicode Error: Help in rectifying

Hi,

The below code is giving me an Unicode error.

Especially <number> gives the Unicode error.

Let me know how to rectify the error.

Code: - start -

FIELD-SYMBOLS: <number>.

DATA: BEGIN OF NUMBERS,

ONE TYPE P VALUE 10,

TWO TYPE P VALUE 20,

THREE TYPE P VALUE 30,

FOUR TYPE P VALUE 40,

FIVE TYPE P VALUE 50,

END OF NUMBERS.

DATA SUM TYPE I.

assign NUMBERS-two to <number>.

ADD <number> FROM 1 TO 3 GIVING SUM.

Code: --- end ---

Regards,

Purshoth