declare 
	l_id number := 0;
begin
/*
	for r in (select id from ~portalSchema.wwnls_strings$ where domain = 'wm' and name like '~userSchema.%') loop
		begin
			l_id := ~portalSchema.wwnls_api.remove_string(r.id, true);
		exception
			when others then
			null;
		end;
	end loop;
*/

  execute immediate '
    declare
      l_id number := 0;
    begin
      for r in (select id from ~portalSchema.wwnls_strings$ where domain = ''wm''
        and name like ''~userSchema.%'') loop
        begin
          l_id := ~portalSchema.wwnls_api.remove_string(r.id, true);
    		exception
      		when others then
        	null;
        end;
      end loop;
    exception
      when others then
        null;
    end;
  ';
  
exception
	when others then
		null;
end;