diff --git a/includes/custom-field-ajuts-filter-function-frontend.php b/includes/custom-field-ajuts-filter-function-frontend.php
index 1d275a7..8b7e79d 100644
--- a/includes/custom-field-ajuts-filter-function-frontend.php
+++ b/includes/custom-field-ajuts-filter-function-frontend.php
@@ -95,7 +95,6 @@ if( ! function_exists( 'ofisuport_ajuts_filters_form' ) ):
 
 (function($) {
     // change
-    //$('#archive-filters').on('change', 'input[type="checkbox"]', function(){
     $('#archive-filters').on('click', 'button', function(){
 
         // vars
@@ -109,11 +108,12 @@ if( ! function_exists( 'ofisuport_ajuts_filters_form' ) ):
         $('#archive-filters .filter').each(function(){
            // check if is first appearance of each
            if( eachfiltered != $(this).data('filter') ){
-
              // save already calculated field=val01,val02,val03
-             appendtoURL += eachfiltered +'=' +valueschecked +'&';
-             // remove last ','
-             appendtoURL = appendtoURL.slice(0, -1);
+             if( eachfiltered != '' && valueschecked != '' ){
+               // remove last ','
+               valueschecked = valueschecked.slice(0, -1);
+               appendtoURL += eachfiltered +'=' +valueschecked +'&';
+             };
              // start new fieldname filtered
              eachfiltered = $(this).data('filter');
              // reset values
@@ -122,18 +122,20 @@ if( ! function_exists( 'ofisuport_ajuts_filters_form' ) ):
              $(this).find('input:checked').each(function(){
                // if not empty save value and ,
                if( $(this).val() != '' ){
-                valueschecked = $(this).val() + ',';
-               }
+                valueschecked += $(this).val() + ',';
+               };
              });
+             //alert( appendtoURL +":" +eachfiltered +"=" +valuescheked);
            } else {
              // we have previous values checked
              // find checked inputs
-             if( $(this).val() != '' ){
+             //if( $(this).val() != '' ){
                // if not empty append value and ,
                $(this).find('input:checked').each(function(){
                  valueschecked += $(this).val() + ',';
                });
-             }
+             //alert( appendtoURL +":not:" +eachfiltered +"=" +valuescheked);
+             //};
            };
         });
         
@@ -141,18 +143,12 @@ if( ! function_exists( 'ofisuport_ajuts_filters_form' ) ):
         appendtoURL += eachfiltered +'=' +valueschecked +'&';
 
         // remove last &
-        appendtoURL = url.slice(0, -1);
+        appendtoURL = appendtoURL.slice(0, -1);
         
         // update url
-        url += '?';
+        url += '?' +appendtoURL;
         
-
-        
-        // reload page
-        //$('#archive-filters button').on('click', function () {
-          alert( "estoy en: " +url +appendtoURL);
-          //window.location.replace( url );
-        //});
+        alert( url );
 
     });