viggis

It's 'impress on (someone)'.

I think I need to impress on you the fact that you can use 'impress on'.

"impressed on" may or may not be correct, depending on the context. Please provide the whole sentence.

What is the meaning of your subject line "viggis"? What does that have to do with the question?

My mother impressed on me the importance of saving for a rainy day.
Chinese artists impress their chop on their calligraphic paintings, usually in red ink on a lower corner.

thank you for answering say, "I´m impressed on your behaviour" as a synonym to "I´m impressed with..."

viggis has nothing to do with the question it was a mistake

AnonymousI´m impressed on your behaviour

No. You can't do that.

CJ

Anonymous thank you for answering say, "I´m impressed on your behaviour" as a synonym to "I´m impressed with..."

Nope. That does not work.