Please extend a 'range' validation rule.
$.extend($.fn.validatebox.defaults.rules,{
range: {
validator: function(value,param){
var min = parseInt(param[0]);
var max = parseInt(param[1]);
return value>=min && value<=max;
},
message: 'The value must be between {0} and {1}'
}
})
And then apply it to the numberbox editor.
editor:{
type:'numberbox',
options:{
validType:'range[10,20]',
//...
}
}