Is it possible to create a template option for the ProgressBar value? It can be used when the ProgressBar value must be formatted based on the current culture (for example, when the number groups must be separated by space rather than comma (",")).
$("#progressbar").kendoProgressBar({
min: 10,
max: 20,
value: 15,
template: "#:kendo.toString(kendo.parseFloat(data.value), 'n2', 'fr-FR')#"
});