In some cases, you may need to ensure that a Shack Forms user can enter only a phone number in a certain field.
- Open your Shack Forms module for editing.
- Open the field that needs to be limited only to numeric data.
- Set the Field type to Text.
/^[\d\-\+() ]+$/into the Validation (Regular Expression) field:
- Click Save or Save & Close.
If you go to your form and enter a letter into this field, both the field label and the field itself get displayed in red color, indicating an input error: