associate the comment with the button

hello experts:

I have a problem: do you know how to associate the comment with the button. In Selection Screen, the FOR FIELD is used to associate the comment with the PARAMETERS and SELECT-OPTIONS, but it doesn't work for button.

SELECTION-SCREEN BEGIN OF LINE.

SELECTION-SCREEN PUSHBUTTON 31(57) butt USER-COMMAND rfsh MODIF ID y07.

SELECTION-SCREEN COMMENT 1(30) text-802 y07 MODIF ID y97.

SELECTION-SCREEN END OF LINE.

wrong:

SELECTION-SCREEN BEGIN OF LINE.

SELECTION-SCREEN PUSHBUTTON 31(57) butt USER-COMMAND rfsh MODIF ID y07.

SELECTION-SCREEN COMMENT 1(30) text-802 for field y07 MODIF ID y97.

SELECTION-SCREEN END OF LINE.

Thanks in advance.

Bob