Textfield allow numbers only

Support
#1

for example I have field as count and count field should allow numbers to enter.

If we use Maskfield it will work but without using maskfield how to do

#2

Hi,

Set the datatype for the field.

#3

I use Datatype like this

@Named("fieldGroup.name")
protected TextField name;

@Override
public void init(Map<String, Object> params) {
    name.setDatatype(Datatypes.get(Integer.class));
}

but it is not working