🚸 (condition) Improve comparison with lists

Closes #363

apps/viewer/src/features/variables/utils.ts

@@ -218,3 +218,14 @@ const updateTypebotVariables =
       ...serializedNewVariables,
     ]
   }
+
+export const findUniqueVariableValue =
+  (variables: Variable[]) =>
+  (value: string | undefined): string | string[] | null => {
+    if (!value || !value.startsWith('{{') || !value.endsWith('}}')) return null
+    const variableName = value.slice(2, -2)
+    const variable = variables.find(
+      (variable) => variable.name === variableName
+    )
+    return variable?.value ?? null
+  }