From KML

Converts the specified KML string to a Spectrum Spatial geometry instance. You can specify the name of the field on the input port that contains the KML formatted string as well as the name of the field to send the geometry to the output port.

Keyhole Markup Language (KML) is an XML notation for expressing geographic annotation and visualization within Internet-based, two-dimensional maps and three-dimensional Earth browsers. For its reference system, KML uses 3D geographic coordinates: longitude, latitude and altitude, in that order, with negative values for west, south and below mean sea level if the altitude data is available. The longitude, latitude components (decimal degrees) are as defined by the World Geodetic System of 1984 (WGS84).
Note: is the only KML namespace supported for the From KML option.
Table 1. From KML Options
Option Name Description
KML string The field containing the KML XML as a string to convert to a Spectrum Spatial geometry.
Geometry field The name of the field that you want to contain the geometry returned by Spatial Calculator; the default is Geometry.