diff --git a/ACTIONS.md b/ACTIONS.md
index 6c3280e..e2d7bcd 100644
--- a/ACTIONS.md
+++ b/ACTIONS.md
@@ -1,6 +1,6 @@
 # Auto-generated Actions list
 
-Fri 31 Jan 20:24:05 UTC 2020
+Fri 31 Jan 21:14:27 UTC 2020
 
 for branch=feature_plugins_shader_gadgets
 
@@ -173,6 +173,7 @@ for branch=feature_plugins_shader_gadgets
   * set_shader_speed_layer_([0-2])_amount
 
 ### Plugin routes
+  * (.*)|invert	(from ManipulatePlugin)
   * (.*)&&(.*)	(from MultiActionsPlugin)
   * run_automation	(from ShaderLoopRecordPlugin)
   * stop_automation	(from ShaderLoopRecordPlugin)
@@ -199,6 +200,8 @@ for branch=feature_plugins_shader_gadgets
   * toggle_pause_automation	(from TestPlugin)
   * pause_automation	(from TestPlugin)
   * toggle_loop_automation	(from TestPlugin)
+  * print_arguments	(from TestPlugin)
+  * set_the_shader_param_([0-3])_layer_offset_([0-2])_continuous_inverted_example	(from TestPlugin)
 
 ----
 
diff --git a/dotfiles/generate-list-actions.sh b/dotfiles/generate-list-actions.sh
index 363c7bb..c572d31 100755
--- a/dotfiles/generate-list-actions.sh
+++ b/dotfiles/generate-list-actions.sh
@@ -12,11 +12,11 @@ grep " def " actions.py | grep -v "^#" | sed -e 's/ def //' | sed -e 's/self//'
 echo
 
 echo "## Dynamic routes"
-grep '( r"' actions.py | sed -e 's/\(.*\)"\(.*\)"\(.*\)/  * \2/'  | sed -e 's/\$//' | sed -e 's/\^//'
+grep '( r"' actions.py | sed -e 's/\(.*\)"\(.*\)"\(.*\)/  * \2/'  | sed -e 's/\$//' | sed -e 's/\^//' | sed -e 's/\\//'
 echo
 
 echo "### Plugin routes"
-grep "( r\"" plugins/*.py | sed -e 's/plugins\/\(.*\)\.py:\(.*\)\( r\"\)\(.*\)\"\(.*\)/  * \4\t(from \1)/' | grep -v "open_serial" | sed -e 's/\$//' | sed -e 's/\^//'
+grep "( r\"" plugins/*.py | sed -e 's/plugins\/\(.*\)\.py:\(.*\)\( r\"\)\(.*\)\"\(.*\)/  * \4\t(from \1)/' | grep -v "open_serial" | sed -e 's/\$//' | sed -e 's/\^//' | sed -e 's/\\//'
 echo 
 
 echo "----"
diff --git a/plugins/ManipulatePlugin.py b/plugins/ManipulatePlugin.py
new file mode 100644
index 0000000..d6c14d0
--- /dev/null
+++ b/plugins/ManipulatePlugin.py
@@ -0,0 +1,22 @@
+import data_centre.plugin_collection
+from data_centre.plugin_collection import ActionsPlugin#, SequencePlugin
+
+class ManipulatePlugin(ActionsPlugin):
+    disabled = False
+
+    def __init__(self, plugin_collection):
+        super().__init__(plugin_collection)
+
+    @property
+    def parserlist(self):
+        return [ 
+                ( r"(.*)\|invert$", self.invert ),
+        ]
+
+    def invert(self, action, value):
+        # invert the value
+        self.pc.actions.call_method_name(
+                action, 1.0 - value
+                # if you were calling an action with no argument, use eg:
+                # "toggle_automation_pause", None
+        )
diff --git a/plugins/TestPlugin.py b/plugins/TestPlugin.py
index bf2e729..a6ad99e 100644
--- a/plugins/TestPlugin.py
+++ b/plugins/TestPlugin.py
@@ -17,6 +17,8 @@ class MidiActionsTestPlugin(ActionsPlugin,SequencePlugin):
                 ( r"^toggle_pause_automation$", self.toggle_pause_automation ),
                 ( r"^pause_automation$", self.pause_automation ),
                 ( r"^toggle_loop_automation$", self.toggle_loop_automation ),
+                ( r"^print_arguments$", self.print_arguments ),
+                ( r"^set_the_shader_param_([0-3])_layer_offset_([0-2])_continuous_inverted_example$", self.invert_shader_param_layer )
         ]
 
     def test_plugin(self):
@@ -49,3 +51,13 @@ class MidiActionsTestPlugin(ActionsPlugin,SequencePlugin):
                 "set_the_shader_param_1_layer_0_continuous", position
         )
 
+    def print_arguments(self, *args):
+        print(">>>>print_arguments ( %s )" % args)
+
+    def invert_shader_param_layer(self, param, layer, value):
+        # invert the value
+        self.pc.actions.call_method_name(
+                "set_the_shader_param_%s_layer_offset_%s_continuous" % ( param, layer), 1.0 - value
+                # if you were calling an action with no argument, use eg:
+                # "toggle_automation_pause", None
+        )