There is a new pmlcmd folder within the pmllib. You will have to make a pmlcmd then add it to the the loadusercommands.pmlfnc within the common functions folder.
Steps:
1. Create pmlcmd file
2. PML REHASH
3. PML LOAD COMMAND !!commandname
4. !!commandname.register
5. create the button within the ribbon
You can use the !!loadUserCommands() function to register your command at startup (you can find this PML function in the PMLLIB of your Aveva installation directory).
