DM3.0 EA2: How do I delete an object with a transformation?

Question

How can I delete a table column as a transformation (tools -> design rules -> transformations)?
I have tried doing this:
if (column.getName().startsWith("created_by")) { delete column; }
but nothing seems to happen...
- Marc de Oliveira

Answer 1

Thank you very much! :-)
Btw, I think it is a really bad idea that the "Table template" transformation is somehow linking the template columns to the actual template table. The script should only base the decision about creating new columns on the column name and not consider if a column was originally created from the template.
Reason 1: If you have created "updated_by" columns on half of your tables before deciding to create a template table and use the "Table template" transformation then all the tables that already have an updated_by column will receive an updated_by1 column.
Reason 2 (my problem): If you delete the template table (by accident) and then recreate it. All columns based on the previous template table will be ignored and you will receive an updated_by1 column on all tables.
The script should just see if a column with the same name exist and only create a new column if it does not already exist.
- Marc de Oliveira