diff --git a/app/imports/parser/functions.js b/app/imports/parser/functions.js
index 9213665e..a98dded5 100644
--- a/app/imports/parser/functions.js
+++ b/app/imports/parser/functions.js
@@ -104,7 +104,7 @@ 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 +i;
       }
       return arrayNode.values.length;
     }