Mapping one key to multiple commands

I’m trying to map one key to perform two actions:

Instead of just `map "n" nextTab`

I’m tried `map "n" nextTab | scrollToTop ` and `map "n" nextTab <bar> scrollToTop`, as described [in stackoverflow here](https://vi.stackexchange.com/questions/3885/how-to-map-two-commands-with-only-one-key)

It is not working. Is this feature already supported? Any guidance.