diff --git a/ewn-schema.json b/ewn-schema.json
index bf53544..129d1f3 100644
--- a/ewn-schema.json
+++ b/ewn-schema.json
@@ -23,7 +23,7 @@
                     "description": "The \"weight\" of the Note/Warning/Error. How heavy is its impact on the validity of the output."
                 },
 				"hgl name": {
-					"type": "string",
+					"type": ["string", "array"],
 					"description": "Name of the column of which's cell should be highlighted if this Note/Warning/Error is found."
 				},
 				"hgl hex": {