Validations on OVF Properties

Hi,

I am customizing an OVF template XML by adding OVF properties.  I have a few questions related to validating the properties.

1) If a property doesn't succeed the validation test (say, it falls short of a MinLength check), then I see a red warning right below the field (while deploying the OVF in a vCenter). But the user is still able to proceed and click Submit. Is there a way to stop the user from proceeding when any validation criteria is not met?

2) One of my OVF properties is an FQDN and I am looking for a way to validate the format of the FQDN. I want it to be of the format (hostprefix + domain name). Is there is a way to do so?

Thanks,

Sabareeswar