diff --git a/include/inc-core/instruction.hpp b/include/inc-core/instruction.hpp
index 6cfdc603b01f0eee9d7f1379559c242d7a139fd4..571e2c70046f522222a426e6f21d3bed6e5b2bf8 100644
--- a/include/inc-core/instruction.hpp
+++ b/include/inc-core/instruction.hpp
@@ -53,7 +53,6 @@ namespace IRDB_SDK
 			virtual void setEhProgram(EhProgram_t* orig)                        = 0;
 			virtual void setEhCallSite(EhCallSite_t* orig)                      = 0;
 			virtual void setIndirectBranchTargetAddress(AddressID_t* myIndTarg) = 0;
-			virtual string assemblegroup(string group)                          = 0;
 			virtual bool assemble(string assembly)                              = 0;
 
 	};
diff --git a/include/inc-transform/rewrite_util.hpp b/include/inc-transform/rewrite_util.hpp
index 5a4d8cdf9ed112d140c5d01646fa05173bad4b2b..39ecac1d56a7218b8f8360f7baf2afbc0c9ce435 100644
--- a/include/inc-transform/rewrite_util.hpp
+++ b/include/inc-transform/rewrite_util.hpp
@@ -24,8 +24,8 @@ namespace IRDB_SDK
 
 	extern Instruction_t* insertAssemblyBefore   (FileIR_t* firp, Instruction_t* before, string assembly, Instruction_t *target=nullptr);
 	extern Instruction_t* insertAssemblyAfter    (FileIR_t* firp, Instruction_t* after , string assembly, Instruction_t *target=nullptr);
-        extern Instruction_t* insertInstructionsBefore   (FileIR_t* firp, Instruction_t* before, string instructions, Instruction_t *target=nullptr);
-        extern Instruction_t* insertInstructionsAfter    (FileIR_t* firp, Instruction_t* after , string instructions, Instruction_t *target=nullptr);
+        extern std::vector<Instruction_t*> insertAssemblyInstructionsBefore   (FileIR_t* firp, Instruction_t* before, string instructions, Instruction_t *target=nullptr);
+        extern std::vector<Instruction_t*> insertAssemblyInstructionsAfter    (FileIR_t* firp, Instruction_t* after , string instructions, Instruction_t *target=nullptr);
 	extern Instruction_t* insertDataBitsBefore   (FileIR_t* firp, Instruction_t* before, string dataBits, Instruction_t *target=nullptr);
 	extern Instruction_t* insertDataBitsAfter    (FileIR_t* firp, Instruction_t* after , string dataBits, Instruction_t *target=nullptr);