How to change header value dynamiclly in procedural alv report?

Question

Hi experts,
I develop one report (using procedural alv ).I gave 3 input check boxes (ex : in 1st checkbox 10days in 2nd check box 20 days
in 3rd check box 30 days they entered like this in the input checkboxes in days 10,20,30.In o/p report 3 columns i maintained like this .   Column1                          column2                                                 column  3
       from 0 to 10 days          from 11 to 20 days                                    from 21 to 30 days.
I want to display alv report o/p like this in the respective columns.
For example they enter 15 25  35 (i/p)
o//p in alv report 
   Column1                          column2                                                 column  3
       from 0 to 15 days          from 16 to 25 days                                    from 26 to 35 days.
i want to change days  dynamically  in alv header  .Pls give me the code using procedural alv report.
If u want i will give u detail.pls help me in this.

Answer 1

I assume the main issue is chaniging ALV header dynamically, isn't it? For this you need to use field seltext_m of fieldcatalog for particular column. So you can contruct header dynamically by string concatenation like
parameters: pa_1st(2) type n,  "i.e. 15
                    pa_2nd(2) type n,  "i.e 25
                    pa_3rd(2) type n.  "i.e. 35
"first field
concatenate '0' 'to' pa_1st into it_fieldcatalog-seltext_m.
"next field
add 1 to pa_1st.
concatenate pa_1st 'to' pa_2nd into it_fieldcatalog-seltext_m.
"last field
add 1 to pa_2nd.
concatenate pa_2nd 'to' pa_3rd into it_fieldcatalog-seltext_m.
Refer [Sample ALV: Heading in ALV|http://www.sap-img.com/abap/sample-alv-heading-in-alv.htm] for more information.
Regards
Marcin