This approach WILL work, however it requires stopping HA.The best way to do this is to create your MyAppTypes.cf file, then from the VCS GUI, clicke "File", then "Import Types". A dialog box will come up where you browse for the .cf file you just created, and the new type will be imported into the running configuration.If you MUST do this from the command line, it's possible to do, but requires about 40 commands to set all the correct default attribute values.Try it on a running cluster with the following types file, then look at the engine log to see all the commands that get generated:type MyApp ( static str ArgList[] = { MyAttr1, MyAttr2 } str MyAttr1 str MyAttr2)