diff --git a/app/imports/parser/functions.js b/app/imports/parser/functions.js
index b1ec5a91..3d5b9c11 100644
--- a/app/imports/parser/functions.js
+++ b/app/imports/parser/functions.js
@@ -106,7 +106,7 @@ export default {
     fn: function tableLookup(arrayNode, number){
       for(let i in arrayNode.values){
         let node = arrayNode.values[i];
-        if (node.value > number) return i;
+        if (node.value > number) return Number(i);
       }
       return arrayNode.values.length;
     }