How to update transport url data in kendo autocomplete ?

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Kendo

Kendo-UI

Hi Team,
I am using below url to get data from server

'http://localhost:60661/api/Books/GetBook/' + AppContext.Unit+ '/Chapter'

as above i want to pass 'AppContext.Unit' value dynamically through API URL using kendo autocomplete widget.


Regards
Nanda Kishore.CH

What I have tried:

$("#txtautoceeec1ec6d4164bc4398").kendoAutoComplete({
filter: "startswith",
minLength: 2,
dataSource: new kendo.data.DataSource({
serverFiltering: true,
transport: {
read: {
url: Utility.GetBaseUrl('LocalServer') + 'Books/GetBook/'+ AppContext.Unit '/Chapter'

},
type: 'get',
parameterMap: function (data, action) {
debugger;
var newParams = {
searchtext: data.filter != null ? data.filter.filters[0].value : null,
filtercriteria: data.filter != null ? data.filter.filters[0].operator : null
};
return newParams;
}
}
}),
dataTextField: "BookName",
dataValueField: ""
});
}