Configuring Mail Reports via drush

[Kevin Cristiano]

I am trying to get drush working using cvapi to run the mail_reports job.

I have tried many variants of:

drush cvapi job.execute mail_report instanceId="1" auth=0 -y

They all succeed at the command line (clean output), But when I view the scheduled job logs I get the following:

Parameters raw (from db settings):
instanceId=[ID of report instance] required
format=[csv or print] optional-output CSV or print-friendly HTML, else PDF

Parameters parsed (and passed to API method):
a:3:{s:7:"version";i:3;s:10:"instanceId";s:32:"[ID of report instance] required";s:6:"format";s:67:"[csv or print] optional-output CSV or print-friendly HTML, else PDF";}

Full message:
Finished execution of Mail Reports with result: Failure, Error message: A fatal error was triggered:  is not of type

The key is [ID of report instance] -  does anyone know the syntax to get drush to work with this job?