how to use NEW LINE in a string in smartform ?

I have try to use  below coding, but cannot get expected output. Please advise

• CL_ABAP_CHAR_UTILITIES=>NEWLINE
• CL_ABAP_CHAR_UTILITIES=>CR_LF

Program Line in Smart form:

CONCATENATE 'AAAA'

             CL_ABAP_CHAR_UTILITIES=>NEWLINE

            'BBBB'

             CL_ABAP_CHAR_UTILITIES=>CR_LF

            'CCCC'

INTO GV_STRING .

Output:

AAAA#BBBB##CCCC

Expected Output:

AAAA

BBBB

CCCC