Bing maps How to set a pin on a map (url)?

Bing maps How to set a pin on a map (url)?

I have all the code, the only thing that missing for me is how to put a
pushpin in that url:
http://www.bing.com/maps/default.aspx?v=2&cp=50.22599~50.81103&lvl=10
My pushpin link is: http://s8.postimg.org/8uuikcaw1/pin.png
I want to make something like this:
http://www.bing.com/maps/default.aspx?v=2&cp=50.22599~50.81103&lvl=10&pushpin=http://s8.postimg.org/8uuikcaw1/pin.png
Or if bing maps has their pushpin, it's also good. Just want to get a
static image with a map and a pushpin on it, can someone help me?
Thanks :)