diff --git a/paychmgr/paych_test.go b/paychmgr/paych_test.go
index ab04ad7e0..1edb840cc 100644
--- a/paychmgr/paych_test.go
+++ b/paychmgr/paych_test.go
@@ -1,3 +1,4 @@
+//stm: #unit
 package paychmgr
 
 import (
@@ -196,6 +197,7 @@ func TestCheckVoucherValid(t *testing.T) {
 
 	for _, tcase := range tcases {
 		tcase := tcase
+		//stm: @PAYMENT_CHANNEL_VOUCHER_001, PAYMENT_CHANNEL_VOUCHER_002, PAYMENT_CHANNEL_VOUCHER_003, PAYMENT_CHANNEL_VOUCHER_004
 		t.Run(tcase.name, func(t *testing.T) {
 			// Create an actor for the channel with the test case balance
 			act := &types.Actor{