tolower Filter condition

Hi Everyone,

I am Currently implementing a list using a ODataModel and we need to do a CONTAINS search irrespective of it's case. So in SAPUI5 using ODataModel can we achieve this?

I tried something like this but it doesn't work:

var CategoryName = "Bevera";

var filters =[];

var binding = this.getView().byId("list");

filters.push(new sap.ui.model.Filter("tolower(CategoryName)", sap.ui.model.FilterOperator.Contains, CategoryName.toLowerCase() + ""));

binding.filter(filters);

The resultant URL is something like this:

$filter=(substringof(Bevera,tolower(ZVIGPOIDN___T)))

but I guess it should be

$filter=(substringof(tolower(ZVIGPOIDN___T),'Bevera'))

Is there anything wrong I am doing? or tolower is not supported?

Regards

Vaibhav Surana