support max is 5

 var $ = require('jquery'),
 var $ = require('jquery'),
-	common = require('../../../../common/common');
+    common = require('../../../../common/common');
 var edit = require('../../../../common/edit');
 var edit = require('../../../../common/edit');
 var jsonUtils=require('./jsonUtils');
 var jsonUtils=require('./jsonUtils');
 var promotionInfoRefresh=require('./promotionInfoRefresh');
 var promotionInfoRefresh=require('./promotionInfoRefresh');
 console.log("operationEdit in");
 console.log("operationEdit in");
 var regrex_special_prds = new RegExp(/^\d{1,9}(,\d{1,9})*$/);
 var regrex_special_prds = new RegExp(/^\d{1,9}(,\d{1,9})*$/);
+//skn数量控制，20
+var regrex_special_prds_20 = new RegExp(/^\d{1,9}(,\d{1,9}){0,19}$/);
 var regrex_double =new RegExp(/\d+(\.\d+)?/);
 var regrex_double =new RegExp(/\d+(\.\d+)?/);
 var regrex_small_digit =new RegExp(/[0]\.\d{1,2}/);
 var regrex_small_digit =new RegExp(/[0]\.\d{1,2}/);
 var operationEdit={
 var operationEdit={
@@ -95,7 +97,7 @@ var operationEdit={
                     display_name : '商品列表',
                     display_name : '商品列表',
                     type : 'textarea',
                     type : 'textarea',
                     default_value : '',
                     default_value : '',
-                    remark:"多个使用英文逗号(,)分割，例如：\"50017804,50019370\""
+                    remark:"多个使用英文逗号(,)分割,最多20个，例如：\"50017804,50019370\""
                  },
                  },
                  {
                  {
                     name:'num' ,
                     name:'num' ,
@@ -380,7 +382,7 @@ var operationEdit={
             case _g.config.Needpaygift.enName:
             case _g.config.Needpaygift.enName:
                 var goods_list = _reqData["data"]["goods_list"];
                 var goods_list = _reqData["data"]["goods_list"];
                 var add_cost = _reqData["data"]["add_cost"];
                 var add_cost = _reqData["data"]["add_cost"];
-                result = regrex_double.test(add_cost) && regrex_special_prds.test(goods_list);
+                result = regrex_double.test(add_cost) && regrex_special_prds_20.test(goods_list);
                 break; 
                 break; 
             //满X免1
             //满X免1
             case _g.config.Cheapestfree.enName:
             case _g.config.Cheapestfree.enName: