From 0b32be0f568f9af1088e6849fc756e44e3023a0c Mon Sep 17 00:00:00 2001
From: Valentin Serra <valentin.serra@camunda.com>
Date: Mon, 23 Oct 2023 10:54:52 +0200
Subject: [PATCH] fix: getSchemaVariables filters null variables

Related to #860
---
 packages/form-js-viewer/src/util/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/form-js-viewer/src/util/index.js b/packages/form-js-viewer/src/util/index.js
index d61cc313a..54f9c7cf8 100644
--- a/packages/form-js-viewer/src/util/index.js
+++ b/packages/form-js-viewer/src/util/index.js
@@ -152,7 +152,7 @@ export function getSchemaVariables(schema, options = {}) {
 
     }
 
-    return variables.filter(variable => variable !== undefined || variable !== null);
+    return variables.filter(variable => ![ undefined, null ].includes(variable));
   }, []);
 
   const getBindingVariables = (node)=> {