diff --git a/Transaction-Rules.md b/Transaction-Rules.md
index 191a95e..2f917f1 100644
--- a/Transaction-Rules.md
+++ b/Transaction-Rules.md
@@ -123,8 +123,10 @@ The following variables are available, referring to the transaction that trigger
 | `internal_id`          | The transaction's internal ID.                               |
 | `is_deleted`           | `True` if the transaction is soft-deleted.                   |
 | `is_muted`             | `True` if the transaction is muted.                          |
-| `is_muted`             | `True` if the transaction is muted.                          |
-| `is_muted`             | `True` if the transaction is muted.                          |
+| `is_recurring`         | `True` if the transaction is a recurring transaction.        |
+| `is_installment`       | `True` if the transaction is part of an installment plan.    |
+| `installment_number`   | The installment number of this transaction, if the transaction is part of an installment plan. Else `None` |
+| `installment_total`    | The number of installments of the installment plan this transaction is part of. Else `None`                |
 
 **Always-available Variables**