I can't update the grid's store,pls help me

[yx200404]

This is my code.
when a grid was inited,i want to modify some colunms values.

ColumnConfig column = new ColumnConfig();
		column.setId("net");
		column.setHeader("net");
		column.setWidth(100);
		configs.add(column);
.....
if(null!=store){
			for(BeanModel model : store.getModels()) {
				model.set("net","ONLINE");
			}
			store.commitChanges();
		 }
.....

but when the program running to for,the "net" colunm of the grid was not been changed...please help me to fix it.thanks very much.

[yx200404]

OH..i know..
it's easy >o<


store.getRecord(model).set("net",message.getValue());

that's OK

[sven]

store.update(model) will also work if you do not want to use Record's.