KendoUI Grid with MultiSelect, addNew item in MultiSelect

In the sample i combinate kendoGrid with a kendoMultiSelect column.

my Sample: kendoGrid with kendoMultiselect Sample Adding for new item works. But the dataBinding it does not work. As soon as you leave the field, the value is lost.

I cleaned the old version of Sample: kendoGrid with kendoMultiselect Sample Adding for new item Steps:

• click into the column country select a item => it works
• click into the column country and type "Test 99"
• click Add new item ==> it goes to datasource.add(); ==> and go to create on Server

this version it works