Index: /issm/trunk-jpl/src/m/classes/autodiff.m
===================================================================
--- /issm/trunk-jpl/src/m/classes/autodiff.m	(revision 13499)
+++ /issm/trunk-jpl/src/m/classes/autodiff.m	(revision 13500)
@@ -29,5 +29,5 @@
 
 			%Driver value:
-			md = checkfield(md,'autodiff.driver','values',{'fos_forward','fov_forward'});
+			md = checkfield(md,'autodiff.driver','values',{'fos_forward','fov_forward','fos_reverse','fov_reverse'});
 
 			%go through our dependents and independents and check consistency: