How to Increase length of Selection Texts ( Parameter/Select-options ) display text in sap ABAP

Limitation :

 If you declare any Selection screen elements (Parameter or Select - options ) , Corresponding displaying we will provide it in Selection texts.

Path -- GOTO --> Text Elements --> Selection Texts.

Ex :  SELECTION-SCREEN BEGIN OF BLOCK b1.
        PARAMETERS : p_rad1 RADIO BUTTON GROUP g1,
                                     p_rad2  RADIO BUTTON GROUP g1.

       SELECTION-SCREEN BEGIN OF BLOCK b1.

Here corresponding Display text of Radio buttons will provide in Selection Texts.But the Maximum length we can provide is 30.

But here in my requirement i need to provide display text as 40 for p_rad1 Radio Button . By using Selection texts , it's not possible.

Solution : 

       SELECTION-SCREEN BEGIN OF BLOCK b1.
       SELECTION-SCREEN BEGIN OF LINE.
       PARAMETERS : p_rad1 RADIO BUTTON GROUP g1.
       SELECTION-SCREEN COMMENT (50) text-001 FOR FIELD p_rad1.
       SELECTION-SCREEN END OF LINE.
       PARAMETERS :   p_rad2  RADIO BUTTON GROUP g1.
       SELECTION-SCREEN BEGIN OF BLOCK b1.


Maintain display text for text-001.

Path : GOTO-->Text Elements --> Text Symbols.