❌ Condition Block Failure — Won’t Follow True/False Paths
I'm building a FAQ loop in Voiceflow where I want to analyze {last_utterance} and based on that, route the user to either:
true → continue the loop
false → go to start
I've tried everything:
Prompt steps with strict system/user prompts
Set variable step assigning a true or false string to {FAQIntent}
Condition blocks (both Prompt and Business Logic)
Even copied over working logic from another build that functions fine — but in this new project, it refuses to work.
No matter what I do, the AI keeps outputting button choices or suggestions instead of simply selecting the true/false path as instructed.
I've explicitly written prompts that forbid anything but one-word output. Still broken.
→ Why is this happening in one build and not the other?
→ Is the Condition block logic corrupted or behaving inconsistently between versions or project settings?
→ Is there a bug in the Prompt Condition type that’s overriding forced outputs?
Any insight appreciated. I’m losing a lot of time on this and getting zero consistency.

4 Replies
Turn off guided navigation in your canvas.

Also is your varibale correct? VF assigns numbers to a variable which is included in a project (if you have pasted or imported) but not created yet.
Ha, that was it SteveB. switched it over and its works well again. Thanks a lot!!!
No worries! 🙂