I have created a Single Calendar event using the SOAP Server functions. I am able to create it easily, including the start and end date attributes.
Now I am trying to update the end_date attribute, and remove it completely, so that the event no longer has an end date. I tried to set an empty string, but I get the error:
Please make sure to provide AssetID, AttributeName and AttributeValue
I also tried to set it to 0000-00-00 --:--:-- but that didn't work either.
What is the value that I need to set this attribute to, to effectively remove it?