present continuous or simple in this case

Question

When you are writing or write the address, don't forget to add:attention to xxxxxx

I think continuous would be better but can I use present continuous for a very quick action (writing xxxxx). I know that I can write : When writing the address, don't forget to add to xxxxxx

Answer 1

I interpret that you are asking which is better:

'When you write the address, don't forget to add to xxxxxx.'

'When writing the address, don't forget to add to xxxxxx.'

Both are natural.