Point in a set of coordinates (boundary) or not

Hi Everyone, I have implemented the code in the link below, Used html snippet widget ( Mx 9.3.0) wrote containsLocation js function for checking the coordinates whether it is present in a boundary or not. But no luck, the error came in the chrome console is undefined. https://developers.google.com/maps/documentation/javascript/examples/poly-containsLocation#maps_poly_containsLocation-javascript Can any one suggest me, how it can be achieved. Thanks in advance!
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