From a9f730b7019330f11dd5b64cc465c9f803508d05 Mon Sep 17 00:00:00 2001
From: Baptiste Arnaud <contact@baptiste-arnaud.fr>
Date: Tue, 31 May 2022 08:17:04 +0200
Subject: [PATCH] =?UTF-8?q?fix(engine):=20=F0=9F=90=9B=20Variable=20value?=
 =?UTF-8?q?=20reset?=
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---
 packages/bot-engine/src/services/logic.ts | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/packages/bot-engine/src/services/logic.ts b/packages/bot-engine/src/services/logic.ts
index d44b893bcd..8d4c319184 100644
--- a/packages/bot-engine/src/services/logic.ts
+++ b/packages/bot-engine/src/services/logic.ts
@@ -66,11 +66,10 @@ const executeSetVariable = (
   step: SetVariableStep,
   { typebot: { variables }, updateVariableValue, updateVariables }: LogicContext
 ): EdgeId | undefined => {
-  if (!step.options?.variableId || !step.options.expressionToEvaluate)
-    return step.outgoingEdgeId
-  const evaluatedExpression = evaluateExpression(variables)(
-    step.options.expressionToEvaluate
-  )
+  if (!step.options?.variableId) return step.outgoingEdgeId
+  const evaluatedExpression = step.options.expressionToEvaluate
+    ? evaluateExpression(variables)(step.options.expressionToEvaluate)
+    : undefined
   const existingVariable = variables.find(byId(step.options.variableId))
   if (!existingVariable) return step.outgoingEdgeId
   updateVariableValue(existingVariable.id, evaluatedExpression)