diff --git a/CMakeLists.txt b/CMakeLists.txt
index 40c5273..bbe8ebc 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,10 @@
 
 cmake_minimum_required(VERSION 3.11)
 
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
 ################################################################################
 # Paths
 set(CMAKE_INSTALL_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/install" CACHE PATH "")
@@ -22,7 +26,6 @@ set(FLUID_PATH "" CACHE PATH "Optional path to the Fluid Decomposition repo")
 
 if (APPLE)
   set(CMAKE_XCODE_GENERATE_SCHEME ON)
-	set(CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "")
   set(CMAKE_OSX_DEPLOYMENT_TARGET "10.8" CACHE STRING "")
   #A consequence of targetting 10.8. Needs to be set globally from 10.15 onwards in order for the test program to compile successfully during configure 
   string(APPEND CMAKE_CXX_FLAGS " -stdlib=libc++")
diff --git a/include/wrapper/ArgsFromClient.hpp b/include/wrapper/ArgsFromClient.hpp
index e4ea235..9f7b091 100644
--- a/include/wrapper/ArgsFromClient.hpp
+++ b/include/wrapper/ArgsFromClient.hpp
@@ -119,6 +119,12 @@ struct ParamReader<impl::FloatControlsIter>
     auto id = fromArgs(x, args, index{}, 0);
     return  {id >= 0 ? std::to_string(id).c_str() : "" };
   }
+  
+  static auto fromArgs(Unit*,Controls& args,typename LongRuntimeMaxT::type&, int)
+  {
+      return typename LongRuntimeMaxT::type{static_cast<index>(args.next()), static_cast<index>(args.next())}; 
+  }
+  
 };
 
 // NRT case: we're decoding data from sc_msg_iter*, there will be a World*, we can't have LocalBufs
@@ -285,6 +291,11 @@ struct ParamReader<sc_msg_iter>
       return res;
   }
   
+  static auto fromArgs(World*,sc_msg_iter& args,typename LongRuntimeMaxT::type&, int)
+  {
+      return typename LongRuntimeMaxT::type{args.geti(), args.geti()}; 
+  }
+
   static auto fromArgs(World*, sc_msg_iter& args, typename ChoicesT::type, int)
   {
      int x = args.geti();
@@ -296,7 +307,6 @@ struct ParamReader<sc_msg_iter>
   {
     return Optional<T>{fromArgs(w,args,T{},int{})};
   }
-  
 };
 
 
diff --git a/include/wrapper/RealTimeBase.hpp b/include/wrapper/RealTimeBase.hpp
index cd228f2..2814af5 100644
--- a/include/wrapper/RealTimeBase.hpp
+++ b/include/wrapper/RealTimeBase.hpp
@@ -118,7 +118,7 @@ struct RealTimeBase
 
     index outputSize = client.controlChannelsOut().size > 0
                            ? std::max(client.audioChannelsOut(),
-                                      client.controlChannelsOut().size)
+                                      client.maxControlChannelsOut())
                            : unit.mSpecialIndex + 1;
     mOutputs.reserve(asUnsigned(outputSize));
 
diff --git a/release-packaging/Classes/FluidMFCC.sc b/release-packaging/Classes/FluidMFCC.sc
index ac1f695..406e84f 100644
--- a/release-packaging/Classes/FluidMFCC.sc
+++ b/release-packaging/Classes/FluidMFCC.sc
@@ -1,18 +1,21 @@
 FluidMFCC : FluidRTMultiOutUGen {
 
-	*kr { arg in = 0, numCoeffs = 13, numBands = 40, startCoeff = 0, minFreq = 20, maxFreq = 20000, windowSize = 1024, hopSize = -1, fftSize = -1, maxNumCoeffs = 13, maxFFTSize = 16384;
-		^this.multiNew('control', in.asAudioRateInput(this), numCoeffs, numBands, startCoeff, minFreq, maxFreq, maxNumCoeffs, windowSize, hopSize, fftSize, maxFFTSize);
+	*kr { arg in = 0, numCoeffs = 13, numBands = 40, startCoeff = 0, minFreq = 20, maxFreq = 20000, windowSize = 1024, hopSize = -1, fftSize = -1, maxNumCoeffs = nil, maxFFTSize = 16384;
+
+        maxNumCoeffs = maxNumCoeffs ? numCoeffs;
+
+		^this.multiNew('control', in.asAudioRateInput(this), numCoeffs, maxNumCoeffs, numBands, startCoeff, minFreq, maxFreq, windowSize, hopSize, fftSize, maxFFTSize);
 	}
 
 
 	init {arg ...theInputs;
 		inputs = theInputs;
-		^this.initOutputs(inputs.at(6),rate);//this instantiate the number of output from the maxNumCoeffs in the multiNew order
+		^this.initOutputs(inputs.at(2),rate);//this instantiate the number of output from the maxNumCoeffs in the multiNew order
 	}
 
 	checkInputs {
 		// the checks of rates here are in the order of the kr method definition
-		if(inputs.at(6).rate != 'scalar') {
+		if(inputs.at(2).rate != 'scalar') {
 			^(": maxNumCoeffs cannot be modulated.");
 		};
 		if(inputs.at(10).rate != 'scalar') {
diff --git a/scripts/target_post.cmake b/scripts/target_post.cmake
index cce9658..487c4ac 100644
--- a/scripts/target_post.cmake
+++ b/scripts/target_post.cmake
@@ -5,7 +5,7 @@
 # under the European Union’s Horizon 2020 research and innovation programme
 # (grant agreement No 725899).
 
-target_compile_features(${PLUGIN} PRIVATE cxx_std_14)
+# target_compile_features(${PLUGIN} PRIVATE cxx_std_14)
 
 if(MSVC)
   target_compile_options(${PLUGIN} PRIVATE /W3)
@@ -20,11 +20,11 @@ else()
   endif()
 endif() 
 
-set_target_properties(${PLUGIN} PROPERTIES
-    CXX_STANDARD 14
-    CXX_STANDARD_REQUIRED YES
-    CXX_EXTENSIONS NO
-)
+# set_target_properties(${PLUGIN} PROPERTIES
+#     CXX_STANDARD 14
+#     CXX_STANDARD_REQUIRED YES
+#     CXX_EXTENSIONS NO
+# )
 
 if(APPLE)
   set_target_properties(${PLUGIN} PROPERTIES