diff --git a/src/client/components/types/steps-lists.js b/src/client/components/types/steps-lists.js
index 5112c67..d0fd7f3 100644
--- a/src/client/components/types/steps-lists.js
+++ b/src/client/components/types/steps-lists.js
@@ -26,7 +26,7 @@ export const variableStepsList = (context, previousSteps, key, variable, variabl
         context,
         previousSteps.concat(steps),
         key,
-        'undefined' === typeof variable ? undefined : variable[key],
+        ('object' === typeof variable && null !== variable) ? variable[key] : undefined,
         description.type,
         type
       )