Number Components provide input control, restricting data entry to numbers only. Users can manually key a number, or use the up/down arrows in the control to increment or decrement the value entered with the mouse. Up and down arrow keys can also be used here.
Number Components support a special property called Increment (Step). When set, data entered into the component must conform to the Increment. For example, if the Increment value was 5, any number entered must be a multiple of five. If you do not provide a valid value to the component, it will fail validation and the Component's border will turn red.
When using a Number component, the data available to Rules in the form will be numeric. This is import to note, especially when performing math and concatenation functions.