introduce oer constraint code
diff --git a/skeletons/NumericString.c b/skeletons/NumericString.c
index bb6a098..8405966 100644
--- a/skeletons/NumericString.c
+++ b/skeletons/NumericString.c
@@ -31,7 +31,7 @@
 		return 0x20;
 	}
 }
-static asn_per_constraints_t asn_DEF_NumericString_constraints = {
+static asn_per_constraints_t asn_DEF_NumericString_per_constraints = {
 	{ APC_CONSTRAINED, 4, 4, 0x20, 0x39 },	/* Value */
 	{ APC_SEMI_CONSTRAINED, -1, -1, 0, 0 },	/* Size */
 	asn_DEF_NumericString_v2c,
@@ -68,7 +68,8 @@
 	asn_DEF_NumericString_tags,
 	sizeof(asn_DEF_NumericString_tags)
 	  / sizeof(asn_DEF_NumericString_tags[0]),
-	&asn_DEF_NumericString_constraints,
+	0,	/* No OER visible constraints */
+	&asn_DEF_NumericString_per_constraints,
 	0, 0,	/* No members */
 	0	/* No specifics */
 };