How to display the column dyanmically depending upon input

Question

I am doing a alv report of tax breaks in which i had 6 columns to be displayed as static and rest of ( vat tax )columns should be dynamic .
if i enter a p.o.document no then if that p.o has taxes
excise and excess then  they should be displayed and vat field contain 0 or nodata then it should not be in output .pls let me know .

Answer 1

Farukh Quadri
   In the program, check if the PO has the EXCISE and EXCESS details. If yes, then make the FLAG = ' ' .
If the PO doesnot have EXCISE and EXCESS  details then make FLAG = 'X'.
While biulding the Field Catalog,  make that COLUMNS INVISIBLE depending upon the FLAG value
loop at locFieldCatalog.
      case locFieldCatalog-fieldname.
        when 'WERKS'.
            locFieldCatalog-emphasize  = 'X'.
            locFieldCatalog-col_pos    = 1.
            modify locFieldCatalog.
        when 'MATNR'.
            locFieldCatalog-emphasize  = 'X'.
            locFieldCatalog-col_pos    = 2.
            modify locFieldCatalog.
<b>        when 'EXCESS'.
          if FLAG = 'X'.
             locFieldCatalog-no_out = 'X'.
             modify locFieldCatalog.
          endif.</b>
  endcase.
Please close your previous postings
Thanks
Kam