diff --git a/bsip-0038.md b/bsip-0038.md
index a598847..890df90 100644
--- a/bsip-0038.md
+++ b/bsip-0038.md
@@ -117,6 +117,13 @@ The `call_order_update_evaluator` is used to evaluate and apply the
   * set or update the field if it presents in the operation and is valid,
   * clear the field if it doesn't present in the operation or is not valid.
 
+## `proposal_create_evaluator`
+
+The `proposal_create_evaluator` is used to evaluate and apply the
+`proposal_create_operation`, which can contain zero or more
+`call_order_udpate_operation` objects. Need to add logic:
+* only allow `target_collateral_ratio` to be set after the hard fork.
+
 ## Call Order Matching and Filling
 
 After a call order get matched with a limit order and about to fill,