Power Query M Langage Web.Contents I get error : &

Hello,

My goal is to generate a power view report with images that comes from a dynamic URL path

To do that I uploaded the SQL server data base using power query

I added a column : Web.Contents("http://....&...."&[IDMASTER]&"...&...") as Binary

but I get an error message :

In this error message it repaces the url path from "&" to "&amp" but I don't know if this why it doesn't work

I've tryed with a static url : Web.Content("http://....jpg") _ same image for every line and it works

What am I doing wrong ?

Thank you in advance