Hi, Apologies..the fault is not with inserting a decimal number. The fault was with the header row. The API does not seem to be able to handle calls when a header contains and underscore e.g. first_name, DEVICE_ID.
When the update included other columns that did not have an underscore the API call continued without error however if the call is limited to a single column worksheet with an header that contains an underscore this will cause an error to be thrown. BR, Will
