View difference between Paste ID: rbepWh1G and b1uWnLTw

 add_filter("gform_allowable_tags_13", "allow_basic_tags", 10, 3);
 function allow_basic_tags($allowable_tags) {
 	return true;
 }
 
 add_action("gform_pre_submission_13", "add_catlink");
 function add_catlink($form){
 
 // assuming your dropdown list includes all of the categories in your site the information a user selects will have a category name
 
 // we then need to grab that category name find out its ID and then build a link
 $categoryname = $_POST["input_7"];
 $category_id = get_cat_ID($categoryname);
 $category_link = get_category_link($category_id);
 
 // lastly, we need to change the POST value from just being the name of the category to being a link.
 $_POST["input_7"] = '<a href="'. esc_url($category_link) .'">'. $categoryname .'</a>';
 
 }