diff --git a/analysis-master/tra_analysis/Array.py b/analysis-master/tra_analysis/Array.py
index bd0b626a..22332fb9 100644
--- a/analysis-master/tra_analysis/Array.py
+++ b/analysis-master/tra_analysis/Array.py
@@ -67,7 +67,7 @@ class Array(): # tests on nd arrays independent of basic_stats
 
 	def __setitem__(self, key, value):
 
-		self.array[key] == value
+		self.array[key] = value
 
 	def normalize(self, array):
 
@@ -149,4 +149,4 @@ class Array(): # tests on nd arrays independent of basic_stats
 			else: 
 				return binary_search(arr, mid + 1, high, x) 
 		else:
-			return -1
\ No newline at end of file
+			return -1