diff --git a/bricks/bricks.js b/bricks/bricks.js
index 798dc0d..5f2b6a6 100644
--- a/bricks/bricks.js
+++ b/bricks/bricks.js
@@ -328,6 +328,7 @@ bricks.buildUrlwidgetHandler = function(w, target, rtdata, desc){
 			params.append(key, value);
 		}
 		options.params = params;
+		options.method = "POST";
 	} else {
 		rtdata = bricks.extend(rtdata, desc.event_params);
 		options = bricks.apply_data(options, rtdata);
diff --git a/bricks/jsoncall.js b/bricks/jsoncall.js
index ac27bc3..f5f8155 100644
--- a/bricks/jsoncall.js
+++ b/bricks/jsoncall.js
@@ -187,11 +187,18 @@ bricks.HttpText = class {
 	}
 }
 
-bricks.HttpBin = class extends bricks.HttpText {
+bricks.HttpArrayBuffer = class extends bricks.HttpText {
 	async get_result_data(resp){
-		return await resp.blob()
+		return await resp.arrayBuffer();
 	}
 }
+
+bricks.HttpBin = class extends bricks.HttpText {
+	async get_result_data(resp){
+		return await resp.blob();
+	}
+}
+
 bricks.HttpResponse = class extends bricks.HttpText {
 	async get_result_data(resp){
 		return resp;