diff --git a/library/RLCMAC_Types.ttcn b/library/RLCMAC_Types.ttcn
index 96b8a64..80a9997 100644
--- a/library/RLCMAC_Types.ttcn
+++ b/library/RLCMAC_Types.ttcn
@@ -182,6 +182,7 @@
 		DlMacHdrDataExt		hdr_ext
 	} with { variant "" };
 	type record RlcmacDlDataBlock {
+		CodingScheme		cs, /* Provided by C++ Decoder */
 		DlMacDataHeader		mac_hdr,
 		/* Octet 3..M / N: manual C++ Decoder */
 		LlcBlocks		blocks
@@ -230,6 +231,7 @@
 	} with { variant "" };
 	/* Manual C++ Decoder: */
 	type record RlcmacDlEgprsDataBlock {
+		CodingScheme		mcs, /* Provided by C++ Decoder */
 		EgprsDlMacDataHeader	mac_hdr,
 		boolean			fbi,
 		boolean			e,
@@ -286,6 +288,7 @@
 	};
 	/* Manual C++ Decoder:  10.3a.2.1 EGPRS Uplink RLC data block */
 	type record RlcmacUlEgprsDataBlock {
+		CodingScheme		mcs, /* Provided by C++ Decoder */
 		EgprsUlMacDataHeader	mac_hdr,
 		boolean			tlli_ind,
 		boolean			e,
@@ -300,6 +303,7 @@
 
 	/* TS 44.060 10.2.2 */
 	type record RlcmacUlDataBlock {
+		CodingScheme		cs, /* Provided by C++ Decoder */
 		/* MAC header */
 		UlMacDataHeader		mac_hdr,
 		/* Octet 3 ... M (optional): manual C++ Decoder */