# Pathway prediction system with bt rules

**URL:** <https://community.envipath.org/t/pathway-prediction-system-with-bt-rules/132>\
**Category:** Prediction engine\
**Created:** [January 25, 2026, 10:14pm UTC](https://community.envipath.org/t/pathway-prediction-system-with-bt-rules/132 "2026-01-25T22:14:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![poonam2275](https://community.envipath.org/letter_avatar_proxy/v4/letter/p/e9c0ed/32.png) [@poonam2275](https://community.envipath.org/u/poonam2275)\
**Post date:** [January 25, 2026, 10:14pm UTC](https://community.envipath.org/t/pathway-prediction-system-with-bt-rules/132/1 "2026-01-25T22:14:08Z")

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How can I use the latest pathway prediction system with bt rules rather than reaction number

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**Author:** ![wicker](https://community.envipath.org/user_avatar/community.envipath.org/wicker/32/10_2.png) [@wicker](https://community.envipath.org/u/wicker)\
**Post date:** [January 27, 2026, 3:10am UTC](https://community.envipath.org/t/pathway-prediction-system-with-bt-rules/132/2 "2026-01-27T03:10:49Z")

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I am not sure I understand, what is the reaction number? We still use the btrules to predict the pathways.