diff --git a/bricks/build.sh b/bricks/build.sh
old mode 100644
new mode 100755
diff --git a/bricks/input.js b/bricks/input.js
index 1e039cc..8e959fd 100644
--- a/bricks/input.js
+++ b/bricks/input.js
@@ -360,7 +360,12 @@ bricks.UiImage =class extends bricks.VBox {
 		this.imgw = null;
 	}
 	take_photo(){
-		var camera = new bricks.Camera({});
+		var camera = new bricks.Camera({
+			"archor":"cc",
+			"auto_open":true,
+			"height":"90%",
+			"width":"90%"
+		});
 		camera.bind('shot', function(d){
 			if (this.imgw){
 				this.remove_widget(this.imgw);
diff --git a/bricks/llm.js b/bricks/llm.js
index 0095bf3..4cab3d2 100644
--- a/bricks/llm.js
+++ b/bricks/llm.js
@@ -157,9 +157,7 @@ bricks.LlmModel = class extends bricks.JsWidget {
 	constructor(llmio, opts){
 		super(opts);
 		this.llmio = llmio;
-		if (opts.use_session){
-			this.messages = [];
-		}
+		this.messages = [];
 	}
 	render_title(){
 		var w = new bricks.HBox({});
@@ -174,6 +172,9 @@ bricks.LlmModel = class extends bricks.JsWidget {
 
 	}
 	async model_inputed(data){
+		if (!opts.use_session){
+			this.messages = [];
+		}
 		var mout = new bricks.ModelOutput({
 					textvoice:this.textvoice,
 					tts_url:this.tts_url,
@@ -184,20 +185,12 @@ bricks.LlmModel = class extends bricks.JsWidget {
 		var fmt = this.opts.user_message_format || { role:'user', content:'${prompt}'};
 		var umsg = bricks.apply_data(fmt, data);
 		var d = data;
-		if (this.messages){
-			this.messages.push(umsg);
-			d = bricks.extend({}, data);
-			d.messages = this.messages;
-			d.model = this.opts.model;
-			d.modelinstanceid = this.opts.modelinstanceid;
-			d.modeltypeid = this.opts.modeltypeid;
-		} else {
-			d = bricks.extend({}, data);
-			d.model = this.opts.model;
-			d.mapi = this.mapi;
-			d.modelinstanceid = this.opts.modelinstanceid;
-			d.modeltypeid = this.opts.modeltypeid;
-		}
+		this.messages.push(umsg);
+		d = {};
+		d.messages = this.messages;
+		d.model = this.opts.model;
+		d.modelinstanceid = this.opts.modelinstanceid;
+		d.modeltypeid = this.opts.modeltypeid;
 		console.log('upload data=', d, this.options);
 		if (this.response_mode == 'stream' || this.response_mode == 'async') {
 			var hr = new bricks.HttpResponseStream();
diff --git a/bricks/llm_dialog.js b/bricks/llm_dialog.js
index 6d29df2..7c3aabe 100644
--- a/bricks/llm_dialog.js
+++ b/bricks/llm_dialog.js
@@ -96,13 +96,12 @@ bricks.LlmMsgBox = class extends bricks.HBox {
 		var d = {
 			messages:this.messages,
 			mapi:this.mapi,
-			prompt:prompt,
 			model:this.model,
 		}
 		// console.log('messages=', this.messages, 'msg=', msg, 'umsg=', umsg);
 		if (this.response_mode == 'stream') {
 			var hr = new bricks.HttpResponseStream();
-			var resp = await hr.post(this.url, {params:d});
+			var resp = await hr.post(this.url, {data:d});
 			this.responsed();
 			await hr.handle_chunk(resp, this.chunk_response.bind(this));
 			this.chunk_ended();