mymaps - How can I centre a map on a location in iframe embedd

How can I centre a map created in Google MyMap when using an iframe embedd?I have followed the instructions in this answer set the center of a embedded map (google map) to a specific location but there must be something I am doing wrong because when I add it throws up an error on my website.<div class="<iframe src=";t=k&z=16&amp" width="640" height="480"></iframe></div>">I would like to add the following lat/long:40.7127, -74.005...Read more