Radzen multiselect drop down SelectedItemsText attribute

Can we custom the text of the SelectedItemsText in multiselect drop down? I wanted to show if all items are selected then display as "All" instead of XX item selected? But when i set as below, it will show XX number + a string "All".

<RadzenDropDown TextProperty="Text" ValueProperty="Value" Multiple=true SelectedItemsText="All"/>

At the moment there is no way to do that. This property will be applied here: