html support

Any help of experience swi-prolog html server would be greatly welcomed.

I tried to use the form to gather information into growing list of facts.
First : IS tgere right way to do it?  I could not figure it ou. So I tried to use form to collect group of strings  and one of the choice from exclusive group.

I use the form  this way :
 
 form([action='/gather'], [
		p([], [
		  		label([for=name],'Name of fragments :'),
		etc


:- http_handler('/gather', eval_fragment, []).

and to debug it 

   
 eval_fragment(Request) :-
        http_redirect(moved, '/',Request),
        http_read_data(Request, Data, []),
        portray_clause(Data),
		byl_jsem,
		nb_getval(counter, C), CNew is C + 1, nb_setval(counter, CNew).
		
byl_jsem :- write("I was here").

With or without  http_redirect(moved, '/',Request), byl_jsem predicated  will never get invoked. end counter stays on 0.

Is there any way to specify which methods should be seen globally ?  or form  the same URL , OR is there some other way to just invoke        method with data. It is possible to do it in XPCE.  But there is no way

to build complete page in XPCE.  OR would just plain HTML be the best option.  if I can only  invoke the  I am using Prolog for further processing (DCG).

At this point I would appreciate any advice, including do not use prolog.
Thanks Josef Frydl