I want to use more then 1 query param for custom list form. So, this is XML definition: _layouts/MyPage.aspx?param1=x¶m2=y
When custom form is called for new listitem it sending request like this:
_layouts/MyPage.aspx?param1=x&param2=y
My thoughts are, that querystring being encoded before redirecting from standard SP list form to my custom. I tried also CDATA - didn't work.