How to define a field value for data to be imported?

[adrianovieira]

We want to define ranges of values from a field to import data from prostgresql to elasticsearch.

How could we do that?

Checks

Version:    1.0.0-beta.1
Variant:    !oss
Go version: go1.12.5
OS:         linux
Arch:       amd64

• I have mentioned my abc version in the issue, if applicable.
• This issue is not a duplicate.
• This issue has a description.

[adrianovieira]

I think this is what I am looking for https://github.com/appbaseio/abc/blob/dev/docs/importer/transforms/skip.md

Am I right?