Configuring field names

[sbimc]

Hi I'm new to grails, and have been experimenting with this plugin. I was wondering if there is there a way to configure table field names? When I tried to run nimble on sql server, there are several errors because some field names are sql keywords. I tried to add the following in the NimbleConfig.groovy:
fieldnames {
external="is_external"
}
But this doesnt seem to get picked up, and I still see keyword related sql syntax errors.

[snimavat]

It is possible to configure table names - http://snimavat.github.io/nimble/guide/configuration.html#tables

Which db do you have, it goes fine in most of the datbases.. mysql etc

[sbimc]

Right, I was able to find documentation on changing the table names, but I was asking about changing the column names in the tables. Are those configurable?
Adding this to NimbleConfig.groovy didn't seem to work:

fieldnames {
external="is_external"
}

[snimavat]

Nope.