Question in ALV List

Dear SAP Folks ,

I am trying to display all the field values in an ALV List(KNA1). But while calling REUSE_ALV_LIST_DISPLAY the program is going to shortdump in these piece of line

concatenate 'RS_HEADER-TEXT' r_col into l_field.

assign (l_field) to <hf>.

<hf> = l_char.

This code is in the program LKKBLF01 .

After debugging I figured out that the error has happend since I am trying to list more that 99 colums , the error in coming for the 100th column .

Is there any possibility to list more than 99 columns in ALV or whether i am in a wrong track .

Thanks & Regards,

Raj