validation for Datatable Column Data

Hi,
I have a editable column in the DataTable component which can have only numbers as input. How do I validate the input. Is there any way to block text input?

Thanks
Ashok

There is a way to define validation rules
http://docs.webix.com/samples/15_datatable/25_validation/index.html
http://docs.webix.com/desktop__data_validation.html

As for blocking text input - there is no way to block the invalid input, but it is possible to mark the cell as invalid just after wrong character typing, and to prevent the editor closing and saving the wrong value - check two last samples on the above linked page.

Thank you.