extjs - How to put validation on text field not allow characters while paste in ext js -

how put validation on text field not allow characters while paste in ext js?

i using maskre: /[0-9]/.
using while entering value digits allowed.
while paste allows character.

maybe check input value on "blur" event :

mytextfield.on('blur', function (component) {     if (!component.isvalid()) {          // need do, maybe clear textfield ?     } })