char* set_location_with_param(void *sp, const char *key, const char *value){
        const char *key_value_separator = "=";
        const char *req_url = VRT_r_req_url(sp);
        const char *req_host = VRT_GetHdr(sp, HDR_REQ, "05Host:");
        const char *param_separator = strchr(req_url, '?') ? "&" : "?";
        char *query_string = malloc(strlen(param_separator) + strlen(key) + strlen(key_value_separator) + strlen(value) + 1);
        if(query_string != NULL){
            strcpy(query_string, param_separator);
            strcat(query_string, key);
            strcat(query_string, key_value_separator);
            strcat(query_string, value);
            VRT_SetHdr(sp, HDR_OBJ, "11Location:", "https://", req_host, req_url, query_string, vrt_magic_string_end);
            free(query_string);
        }
    }

if (obj.status == somevalue) {
    C{set_location_with_param(sp, "something", "somethingelse");}C
    set obj.status = 302;
    return(deliver);
}