Hi Nirav Jani, what do you mean by selection for customer? FYI, right now, I'm using POS enhanced module to choose customer from POS UI. I get it from here : http://thierry-godin.developpez.com/openerp/openerp-module-pos-enhanced-en/ .

Yes, If you want change the product price which right side in POS UI based on select customer,you need more change in JS file.

Right now, I can see that in JS file, the price for the product is from this code (correct me if i'm wrong): then(function(categories){ self.db.add_categories(categories); return self.fetch( 'product.product', ['name', 'list_price','price','pos_categ_id', 'taxes_id', 'ean13', 'default_code', 'to_weight', 'uom_id', 'uos_id', 'uos_coeff', 'mes_type', 'description_sale', 'description', 'is_pack'], [['sale_ok','=',true],['available_in_pos','=',true]], {pricelist: self.get('shop').pricelist_id[0]} // context for price ); and, module.Orderline = Backbone.Model.extend({ initialize: function(attr,options){ this.price = options.product.get('price'); Let say I need to get the new product price which define at account.analytic.account (contract), does it require a lot of changes or just a minor changes?

It is more change require because of when POS session start set single pricelist. In this case we set mutiple price for single product so that more changes require.

I tried to call on_change function in JS file. This function work fine if I create the order from the normal UI. But when I create the order through POS UI, I got this error: TypeError: onchange_partner() takes at least 5 arguments (4 given) Here is how I call the function: new instance.web.Model('sale.order').call('onchange_partner',[ids]).then(function(id){}); Do I call the function wrongly or I need to configure something else to make it work?

I forgot to mention that this onchange function use to get the product's price from the contract.