numbering multi-line formulas

[s nedunuri]

Hello, I wonder if anyone can help me with how to number multi-line 
formulas, as the Help manual appears to be out of date (it refers to 
menu options that no longer exist). I am running Lyx 2.0.2. I have a 
multi-line formula that I created via the "Insert Matrix" command. I 
would like to number each line in the formula. However, when I try this: 
Edit | Math |  there are two choices: Number Whole Formula or Number 
This Line. However, they seem to be the same thing. Turning one one 
automatically enables the other, as does turning either one off. The 
result is that either there is no numbering at all or one number for the 
entire array, which is not what I want. Anyone have any ideas?

thanks