diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b43982..9ec7b57 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -81,36 +81,36 @@ target_include_directories(${AppExec} PUBLIC src)
 add_subdirectory(src/OpDefs)
 
 # tests
-# Include(FetchContent)
+Include(FetchContent)
 
-# FetchContent_Declare(
-#   Catch2
-#   GIT_REPOSITORY https://github.com/catchorg/Catch2.git
-#   GIT_TAG        v3.8.1 # or a later release
-# )
+FetchContent_Declare(
+  Catch2
+  GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+  GIT_TAG        v3.8.1 # or a later release
+)
 
-# FetchContent_MakeAvailable(Catch2)
+FetchContent_MakeAvailable(Catch2)
 
-# add_executable(${TestExec}
-#     ${ENGINE_SOURCES}
-#     tests/main-tests.cpp
-#     tests/OperatorTests.cpp
-#     tests/NetworkTests.cpp
-# )
-# target_link_libraries(${TestExec} PRIVATE Catch2::Catch2WithMain Eigen3::Eigen Qt6::Core TBB::tbb Boost::filesystem Boost::system)
-# target_compile_definitions(${TestExec} PRIVATE UNIT_TEST)
-# target_include_directories(${TestExec} PUBLIC
-#     src
-#     ${BOOST_INCLUDE_DIRS}
-# )
+add_executable(${TestExec}
+    ${ENGINE_SOURCES}
+    tests/main-tests.cpp
+    tests/OperatorTests.cpp
+    tests/NetworkTests.cpp
+)
+target_link_libraries(${TestExec} PRIVATE Catch2::Catch2WithMain Eigen3::Eigen Qt6::Core TBB::tbb Boost::filesystem Boost::system)
+target_compile_definitions(${TestExec} PRIVATE UNIT_TEST)
+target_include_directories(${TestExec} PUBLIC
+    src
+    ${BOOST_INCLUDE_DIRS}
+)
 
-# # benchmarks
-# add_executable(${BenchExec}
-#     ${ENGINE_SOURCES}
+# benchmarks
+add_executable(${BenchExec}
+    ${ENGINE_SOURCES}
 
-#     tests/Benchmarks.cpp
-# )
-# target_link_libraries(${BenchExec} PRIVATE Catch2::Catch2WithMain Eigen3::Eigen Qt6::Core TBB::tbb Boost::filesystem Boost::system)
-# target_compile_definitions(${BenchExec} PRIVATE UNIT_TEST)
-# target_include_directories(${BenchExec} PUBLIC src)
+    tests/Benchmarks.cpp
+)
+target_link_libraries(${BenchExec} PRIVATE Catch2::Catch2WithMain Eigen3::Eigen Qt6::Core TBB::tbb Boost::filesystem Boost::system)
+target_compile_definitions(${BenchExec} PRIVATE UNIT_TEST)
+target_include_directories(${BenchExec} PUBLIC src)
 
diff --git a/src/Engine/Parameter/Type.h b/src/Engine/Parameter/Type.h
index 3c858fb..332015f 100644
--- a/src/Engine/Parameter/Type.h
+++ b/src/Engine/Parameter/Type.h
@@ -4,12 +4,12 @@ namespace enzo::prm
 
 {
 
-enum class Type
-{
-    STRING,
-    FLOAT,
-    INT,
-};
+// enum class Type
+// {
+//     STRING,
+//     FLOAT,
+//     INT,
+// };
 
 
 // class Type
diff --git a/src/Engine/Types.h b/src/Engine/Types.h
index ac835b8..91aa852 100644
--- a/src/Engine/Types.h
+++ b/src/Engine/Types.h
@@ -31,6 +31,16 @@ namespace enzo
         using Vector3 = Eigen::Vector3d;
         using Vector4 = Eigen::Vector4d;
     }
+    namespace prm
+    {
+        enum class Type
+        {
+            STRING,
+            FLOAT,
+            INT,
+            TOGGLE
+        };
+    }
     namespace nt
     {
         using OpId = uint64_t;
diff --git a/tests/Benchmarks.cpp b/tests/Benchmarks.cpp
index 3562a66..9c4cdc5 100644
--- a/tests/Benchmarks.cpp
+++ b/tests/Benchmarks.cpp
@@ -26,7 +26,7 @@ struct OperatorTableInit
     OperatorTableInit() { enzo::op::OperatorTable::initPlugins(); }
 };
 static OperatorTableInit _operatorTableInit;
-auto testOpCtor = enzo::op::OperatorTable::getOpConstructor("house");
+auto testOpInfo = enzo::op::OperatorTable::getOpInfo("house").value();
 
 TEST_CASE_METHOD(NMReset, "Network Manager")
 {
@@ -34,7 +34,7 @@ TEST_CASE_METHOD(NMReset, "Network Manager")
 
     auto& nm = nt::nm();
 
-    nt::OpId startOp = nm.addOperator(testOpCtor);
+    nt::OpId startOp = nm.addOperator(testOpInfo);
     nt::OpId prevOp = startOp;
     std::vector<nt::OpId> prevOps;
 
@@ -42,7 +42,7 @@ TEST_CASE_METHOD(NMReset, "Network Manager")
     {
         for(int i=0; i<4; ++i)
         {
-            nt::OpId newOp = nm.addOperator(testOpCtor);
+            nt::OpId newOp = nm.addOperator(testOpInfo);
             prevOps.push_back(newOp);
             nt::connectOperators(newOp, i, prevOp, 0);
         }
@@ -52,7 +52,7 @@ TEST_CASE_METHOD(NMReset, "Network Manager")
             for(int i=0; i<size(prevOpsBuffer); ++i)
             {
                 prevOps.clear();
-                nt::OpId newOp = nm.addOperator(testOpCtor);
+                nt::OpId newOp = nm.addOperator(testOpInfo);
                 prevOps.push_back(newOp);
                 nt::connectOperators(newOp, 0, prevOpsBuffer[i], 0);
 
diff --git a/tests/NetworkTests.cpp b/tests/NetworkTests.cpp
index ecb79e3..3a370b6 100644
--- a/tests/NetworkTests.cpp
+++ b/tests/NetworkTests.cpp
@@ -26,14 +26,14 @@ struct OperatorTableInit
     OperatorTableInit() { enzo::op::OperatorTable::initPlugins(); }
 };
 static OperatorTableInit _operatorTableInit;
-auto testOpCtor = enzo::op::OperatorTable::getOpConstructor("house");
+auto testOpInfo = enzo::op::OperatorTable::getOpInfo("house").value();
 
 TEST_CASE_METHOD(NMReset, "network fixture separation start")
 {
     using namespace enzo;
     auto& nm = nt::nm();
 
-    nt::OpId newOpId = nm.addOperator(testOpCtor);
+    nt::OpId newOpId = nm.addOperator(testOpInfo);
     REQUIRE(newOpId==1);
     REQUIRE(nm.isValidOp(1));
     
@@ -53,8 +53,8 @@ TEST_CASE_METHOD(NMReset, "network")
     using namespace enzo;
     auto& nm = nt::nm();
 
-    nt::OpId newOpId = nm.addOperator(testOpCtor);
-    nt::OpId newOpId2 = nm.addOperator(testOpCtor);
+    nt::OpId newOpId = nm.addOperator(testOpInfo);
+    nt::OpId newOpId2 = nm.addOperator(testOpInfo);
 
     REQUIRE(nm.isValidOp(newOpId));
     if(nm.isValidOp(newOpId))
@@ -78,13 +78,13 @@ TEST_CASE_METHOD(NMReset, "reset")
     using namespace enzo;
     auto& nm = nt::nm();
 
-    nt::OpId newOpId = nm.addOperator(testOpCtor);
+    nt::OpId newOpId = nm.addOperator(testOpInfo);
 
     nm._reset();
 
     REQUIRE_FALSE(nm.isValidOp(newOpId));
 
-    nt::OpId newOpId2 = nm.addOperator(testOpCtor);
+    nt::OpId newOpId2 = nm.addOperator(testOpInfo);
     REQUIRE(nm.isValidOp(newOpId2));