Can you be more specific about what you are trying to do? Are you trying to set a parameter that the vendor doesn’t expose via discovery but still allows you to set? If so, genieacs doens’t support that.
From looking at the parameter values you are trying to set, you need to add an instance first. To the best of my knowledge, this can only be accomplished via provision scripts.
Also, please use triple backticks ``` on a new line to create code blocks when you are pasting commands into the forum. This way Discuss doesn’t turn normal quotes into curly quotes.