diff --git a/examples/ClientTests/CMakeLists.txt b/examples/ClientTests/CMakeLists.txt
index d6f124cc7cbfef610e637830bbbc74739ccb1dd5..345a85610cbd7a6ab252685bc0e4e8b42d67aaef 100644
--- a/examples/ClientTests/CMakeLists.txt
+++ b/examples/ClientTests/CMakeLists.txt
@@ -36,7 +36,7 @@ dd4hep_add_test_reg( ClientTests_namespace_constants
   COMMAND    "${CMAKE_INSTALL_PREFIX}/bin/run_test_ClientTests.sh"
   EXEC_ARGS  geoPluginRun -input ${ClientTestsEx_INSTALL}/compact/NamespaceConstants.xml
   -destroy -plugin DD4hep_VolumeDump -plugin DD4hep_TestConstantsMultiplier
-  REGEX_PASS "Constant: world_z          = world::Z         \\[number\\]  -> 10\\*world_z          =     1e\\+03"
+  REGEX_PASS "Constant: world_z          = world::Z         \\[number\\]  -> world_z          =       100"
   REGEX_FAIL "Exception"
   REGEX_FAIL "FAILED"
   )
diff --git a/examples/ClientTests/src/TestConstantMultiplier.cpp b/examples/ClientTests/src/TestConstantMultiplier.cpp
index b2e86f94adbaa6b4e3b79b43ada5f6ebe96728bd..f2af38dc25f3c3350d12bac0fbc757482aa96713 100644
--- a/examples/ClientTests/src/TestConstantMultiplier.cpp
+++ b/examples/ClientTests/src/TestConstantMultiplier.cpp
@@ -57,19 +57,23 @@ static int multiply_constants (Detector& detector, int argc, char** argv)  {
       "\tArguments given: " << arguments(argc,argv) << endl << flush;
     ::exit(EINVAL);
   }
+  int num_test = 0;
   const auto& constants = detector.constants();
   for(const auto e : constants)  {
     Constant c = e.second;
     if ( c.dataType() == "number" )   {
       try {
-        double res = _multiply(c.name(),10.0);
-        printout(INFO,"TestConstantsMultiplier","+++ Constant: %-16s = %-16s [%s]  -> 10*%-16s = %9.3g",
+        double res = _multiply(c.name(),1.0);
+        printout(INFO,"TestConstantsMultiplier","+++ Constant: %-16s = %-16s [%s]  -> %-16s = %9.3g",
                  c.name(), c->GetTitle(), c.dataType().c_str(), c.name(), res);
+        ++num_test;
       }
       catch(...)   {
       }
     }
   }
+  printout(ALWAYS,"TestConstantsMultiplier",
+           "+++ Tested %d numeric constants for expression evaluation.",num_test);
   return 1;
 }
 
diff --git a/examples/DDCMS/CMakeLists.txt b/examples/DDCMS/CMakeLists.txt
index 41b33a8a51552f6e5bf0f4d1dd0f0d99eec500f6..a71cdae31d0ae7f60ea218e0526dc16da1b23842 100644
--- a/examples/DDCMS/CMakeLists.txt
+++ b/examples/DDCMS/CMakeLists.txt
@@ -57,6 +57,17 @@ dd4hep_add_test_reg( DDCMS_TestShapes
   )
 #
 #  Test CMS tracker detector construction
+dd4hep_add_test_reg( DDCMS_NamespaceConstants
+  COMMAND    "${CMAKE_INSTALL_PREFIX}/bin/run_test_DDCMS.sh"
+  EXEC_ARGS  geoPluginRun  -destroy -print WARNING
+  -input file:${CMAKE_CURRENT_SOURCE_DIR}/data/cms_tracker.xml
+  -plugin DD4hep_TestConstantsMultiplier
+  REGEX_PASS "Tested 2551 numeric constants for expression evaluation"
+  REGEX_FAIL "Exception"
+  REGEX_FAIL "FAILED"
+  )
+#
+#  Test CMS tracker detector construction
 dd4hep_add_test_reg( DDCMS_LoadGeometry
   COMMAND    "${CMAKE_INSTALL_PREFIX}/bin/run_test_DDCMS.sh"
   EXEC_ARGS  geoPluginRun