diff --git a/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model b/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model
index c587fb7..07e5d80 100644
--- a/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model
+++ b/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model
@@ -1,3 +1,7 @@
+channel CIO_AddCustomer {
+	out customers(db:Map, addCustomer(uid:Str, off:Str)) == insert(db, uid, {"off": off})
+}
+
 channel CIO_SetCustomerOff(uid:Str) {
 	out customers.{uid}.off(cid:Str, setOff(cid2)) == cid2
 }
@@ -7,7 +11,7 @@
 }
 
 channel C(uid:Str) {
-	in customers.{uid}.off(cid, sync(cid2, a2)) == cid2
-	in companies.{cid2}.add(a1, sync(cid2, a2)) == a2
-	out customers.{uid}.add(a3:Str, sync(cid2, a2)) == a2
+	in customers.{uid}.off(cid, sync(cid2, add2)) == cid2
+	in companies.{cid2}.add(a1, sync(cid2, add2)) == add2
+	out customers.{uid}.add(a3:Str, sync(cid2, add2)) == add2
 }