CTRL_Types: Fix SET value not encoded in message

Change-Id: I9e0132429265d03caa97af2b2f44eed0327f3200
diff --git a/library/Osmocom_CTRL_Types.ttcn b/library/Osmocom_CTRL_Types.ttcn
index eb22056..5c4527e 100644
--- a/library/Osmocom_CTRL_Types.ttcn
+++ b/library/Osmocom_CTRL_Types.ttcn
@@ -90,7 +90,7 @@
 		verb := "SET",
 		id := id,
 		variable := variable,
-		val := omit
+		val := val
 	}
 }