Short Text fields are used frequently and extensively in the GoCanvas App Builder. These fields can capture limited amounts of general text, collect an email address from a user, and be used exclusively for numerical input.
To limit Short Text fields to only accept numeric data, you will need to update the Field Settings from the App Builder. There are three styles of Short Text fields that can be selected: None, Email, and Number.
To collect only numerical data, select Number from the available styles:
Setting the style to Number will limit users to the number pad when inputting data to the Short Text field on their mobile device: