Set the maximum length for a field.
field String (required) - The data name for the field
length number,null (required) - The maximum length of the field
SETMAXLENGTH('weather_summary', 25) // Sets the maximum length of the weather summary field to 25
// Unsets any override previously set by SETMAXLENGTH and uses the original setting from the form schema SETMAXLENGTH('weather_summary', null)