--- loncom/homework/templates/CustomResponse.problem	2009/07/06 17:12:47	1.3
+++ loncom/homework/templates/CustomResponse.problem	2010/06/10 22:37:12	1.4
@@ -11,7 +11,7 @@ if ($submission=~/\,/) { return 'EXTRA_A
 # No units needed
 if ($submission=~/^\d+\s+\w+$/) { return 'UNIT_NOTNEEDED'; }
 # Need a numerical answer here
-if ($submission!~/^\d+$/) { return 'WANTED_NUMERIC'; }
+if ($submission!~/^[\d\.\-]+$/) { return 'WANTED_NUMERIC'; }
 $difference=abs(90-abs($submission));
 if ($difference==0) { return 'EXACT_ANS'; }
 if ($difference < 0.001) { return 'APPROX_ANS'; }