Build numbers on the test result graphs have returned

Change-Id: I01caf5cd9f24c6eb60be053e770b4372f88e0fff
diff --git a/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R b/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R
index f8ec145..fb70d9c 100644
--- a/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R
+++ b/TestON/JenkinsFile/scripts/testCaseGraphGenerator.R
@@ -236,7 +236,7 @@
 theme_set( theme_grey( base_size = 26 ) )   # set the default text size of the graph.
 
 xScaleConfig <- scale_x_continuous( breaks = dataFrame$iterative,
-                                    label = dataFrame$Build )
+                                    label = dataFrame$build )
 yScaleConfig <- scale_y_continuous( breaks = seq( 0, max( dataFrame$Tests ),
                                     by = ceiling( max( dataFrame$Tests ) / 10 ) ) )