UpdateCdt(
  data: any,
  field: text,
  value: any
)
=with(
  /* Get the target data type */
  local!dataType: runtimetypeof(index(ri!data, ri!field, "")),

  /* Special handling for date/time types as Appian is
     not able the decode a date/time from JSON */
  local!newValue: if(
    contains(
      {7, 9},
      local!dataType
    ),
    todecimal(ri!value),
    ri!value
  ),
  local!fieldsAndValues: a!fromJson(
    substitute(
      a!toJson(
        /* Use a fancy field name to prevent errors when replacing it in JSON format */
        {'#$#&#':local!newValue}
      ),
      "#$#&#",
      ri!field
    )
  ),
  /* To make sure the returned data is of the correct type,
     cast it to the incoming type */
  cast(
    runtimetypeof(ri!data),
    updatecdt(ri!data, local!fieldsAndValues)
  )
)