diff --git a/src/datatypes/structures.js b/src/datatypes/structures.js
index a008808..da76311 100644
--- a/src/datatypes/structures.js
+++ b/src/datatypes/structures.js
@@ -1,5 +1,6 @@
 var getField= require("../utils").getField;
 var debug = require("../debug");
+var evalCondition= require("../utils").evalCondition;
 
 module.exports = {
   'array':[readArray,writeArray,sizeOfArray],