javascript - Disappearing data, what's going on? Pebble newbie -

brand new , naive pebble sdk , c lots of experience in other languages. means i'm going embarrassed when solves me but... have 2 files in watchface project based on tutorials... i'm pulling in different data works getting started tutorial until point code updates 1 of text layers with... nothing. it's got me puzzled becuase data it's supposed putting in there appears fine in console log it's getting passed over. anyways, here's c

include  #define key_monthmiles 0 #define key_monthelevation 1 #define key_totalmiles 2 #define key_totalelevation 3  static window *s_main_window; static textlayer *s_time_layer; static bitmaplayer *s_background_layer; static gbitmap *s_background_bitmap; static textlayer *s_weather_layer;  static void update_time() {     // tm structure     time_t temp = time(null);      struct tm *tick_time = localtime(&temp);      // create long-lived buffer     static char buffer[] = "00:00";      // write current hours , minutes buffer     if(clock_is_24h_style() == true) {         // use 24 hour format         strftime(buffer, sizeof("00:00"), "%h:%m", tick_time);     } else {         // use 12 hour format         strftime(buffer, sizeof("00:00"), "%i:%m", tick_time);     }      // display time on textlayer     text_layer_set_text(s_time_layer, buffer); }  static void tick_handler(struct tm *tick_time, timeunits units_changed) {     update_time(); }  static void inbox_received_callback(dictionaryiterator *iterator, void *context) {     // store incoming information     static char monthlymiles_buffer[128];     static char monthlyelevation_buffer[128];     static char yearlymiles_buffer[128];     static char yearlyelevation_buffer[128];      // read first item     tuple *t = dict_read_first(iterator);      // items     while(t != null) {         // key received?         switch(t->key) {             case key_monthmiles:                 snprintf(monthlymiles_buffer, sizeof(monthlymiles_buffer), "%d", (int)t->value->int32);                 break;             case key_monthelevation:                 snprintf(monthlyelevation_buffer, sizeof(monthlyelevation_buffer), "%d", (int)t->value->int32);                 break;             case key_totalmiles:                 snprintf(yearlymiles_buffer, sizeof(yearlymiles_buffer), "%d", (int)t->value->int32);                 break;             case key_totalelevation:                 snprintf(yearlyelevation_buffer, sizeof(yearlyelevation_buffer), "%d", (int)t->value->int32);                 break;             default:                 app_log(app_log_level_error, "key %d not recognized!", (int)t->key);                 break;         }          // next item         t = dict_read_next(iterator);     }     text_layer_set_text(s_weather_layer, monthlymiles_buffer); }  static void inbox_dropped_callback(appmessageresult reason, void *context) {     app_log(app_log_level_error, "message dropped!"); }  static void outbox_failed_callback(dictionaryiterator *iterator, appmessageresult reason, void *context) {     app_log(app_log_level_error, "outbox send failed!"); }  static void outbox_sent_callback(dictionaryiterator *iterator, void *context) {     app_log(app_log_level_info, "outbox send success!"); }  static void main_window_load(window *window) {     // create gbitmap, set created bitmaplayer     s_background_bitmap = gbitmap_create_with_resource(resource_id_bg_image);     s_background_layer = bitmap_layer_create(grect(0, 0, 144, 168));     bitmap_layer_set_bitmap(s_background_layer, s_background_bitmap);     layer_add_child(window_get_root_layer(window), bitmap_layer_get_layer(s_background_layer));       // create time textlayer     s_time_layer = text_layer_create(grect(0, 60, 144, 50));     text_layer_set_background_color(s_time_layer, gcolorclear);     text_layer_set_text_color(s_time_layer, gcolorwhite);     layer_add_child(window_get_root_layer(window), text_layer_get_layer(s_time_layer));      // improve layout more watchface     text_layer_set_font(s_time_layer, fonts_get_system_font(font_key_bitham_42_bold));     text_layer_set_text_alignment(s_time_layer, gtextalignmentcenter);      // make sure time displayed start     update_time();      // create temperature layer     s_weather_layer = text_layer_create(grect(0, 130, 144, 25));     text_layer_set_background_color(s_weather_layer, gcolorclear);     text_layer_set_text_color(s_weather_layer, gcolorwhite);     text_layer_set_text_alignment(s_weather_layer, gtextalignmentcenter);     text_layer_set_text(s_weather_layer, "loading...");     text_layer_set_font(s_weather_layer, fonts_get_system_font(font_key_gothic_14));     layer_add_child(window_get_root_layer(window), text_layer_get_layer(s_weather_layer)); }  static void main_window_unload(window *window) {     // destroy textlayer     text_layer_destroy(s_time_layer);      // destroy gbitmap     gbitmap_destroy(s_background_bitmap);      // destroy bitmaplayer     bitmap_layer_destroy(s_background_layer);      // destroy weather elements     text_layer_destroy(s_weather_layer); }  static void init() {     // create main window element , assign pointer     s_main_window = window_create();      // set handlers manage elements inside window     window_set_window_handlers(s_main_window, (windowhandlers) {         .load = main_window_load,         .unload = main_window_unload     });      // show window on watch, animated=true     window_stack_push(s_main_window, true);      // register ticktimerservice     tick_timer_service_subscribe(minute_unit, tick_handler);      // register callbacks     app_message_register_inbox_received(inbox_received_callback);     app_message_register_inbox_dropped(inbox_dropped_callback);     app_message_register_outbox_failed(outbox_failed_callback);     app_message_register_outbox_sent(outbox_sent_callback);      // open appmessage     app_message_open(app_message_inbox_size_maximum(), app_message_outbox_size_maximum()); }  static void deinit() {     // destroy window     window_destroy(s_main_window); }  int main(void) {     init();     app_event_loop();     deinit(); } 

and here's javascript

var xhrrequest = function (url, type, callback) {     var xhr = new xmlhttprequest();     xhr.onload = function () {         callback(this.responsetext);     };     xhr.open(type, url);     xhr.send(); };  function getstats() {     // construct url     var url = "http://crin.co.uk/stravawatchface/getstats.php";      // send request crin.co.uk     xhrrequest(url, 'get',      function(responsetext) {         // responsetext contains json object stat info         var json = json.parse(responsetext);          // monthly miles         var monthmiles = json.mm;         console.log("monthly total miles is: " + monthmiles);          // monthly elevation         var monthelevation = json.me;          console.log("monthly total elevation gain is: " + monthelevation);          // total miles         var totalmiles = json.tm;          console.log("all-time total miles is: " + totalmiles);          // total elevation         var totalelevation = json.te;          console.log("all-time total elevation gain is: " + totalelevation);          // assemble dictionary using our keys         var dictionary = {             "key_monthmiles": monthmiles,             "key_monthelevation": monthelevation,             "key_totalmiles": totalmiles,             "key_totalelevation": totalelevation         };          // send pebble         pebble.sendappmessage(dictionary,         function(e) {             console.log("stats info sent pebble successfully!");         },         function(e) {             console.log("error sending stats info pebble!");         }         );     }      ); }  // listen when watchface opened pebble.addeventlistener('ready',  function(e) {     console.log("pebblekit js ready!");      // initial weather     getstats(); } );  // listen when appmessage received pebble.addeventlistener('appmessage', function(e) {     console.log("appmessage received!");     getstats(); }  ); 

anyone spot obvious? compiles , installs fine, line...

text_layer_set_text(s_weather_layer, monthlymiles_buffer); 

is updating watchface blank space , not value should.

please i've lost afternoon this.