# Rule engine (dictionary)

**URL:** <https://forum.knime.com/t/rule-engine-dictionary/25449>\
**Category:** KNIME Analytics Platform\
**Created:** [July 23, 2020, 11:40am UTC](https://forum.knime.com/t/rule-engine-dictionary/25449 "2020-07-23T11:40:41Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![elsamuel](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/e/b4bc9f/32.png) [@elsamuel](https://forum.knime.com/u/elsamuel)\
**Post date:** [July 23, 2020, 7:04pm UTC](https://forum.knime.com/t/rule-engine-dictionary/25449/2 "2020-07-23T19:04:56Z")

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You’d have to use an additional node for every new column you want added/modified.

If you want to do something like this with 1 node, you can try nesting a series of [if-else statements](https://forum.knime.com/t/how-to-use-if-expressions-in-a-column-expressions-node/14274/8) in the Column Expressions node.

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