I'm trying to use the code below to open a new window while passing a value to the url.
="javascript:void(window.open('http://MYSite.aspx?acctcode=" &Fields!Account.Value', '_blank'))"
Currently the link is appearing but when I click it nothing is happening.
try with this (expression was incomplete)
="javascript:void(window.open('http://MYSite.aspx?acctcode=" & Fields!Account.Value & "', '_blank'))"
also, verify the same after deploying to the report server, it might not work in preview