How to combine two variables together in APM variable assign

Hi, thanks for the question. In Variable Assign (or branch rules), you can include any TCL you want. The TCL command "expr" is used because the results are mostly boolean. For a variable assignment though, they are mostly strings, so the expr command in this context is inappropriate. Better to use "return". This avoids problems where expr's number conversion can mess up text strings. So, to concatenate them, it would be simply: session.logon.last.username = return "[mcget {session.ntlm.last.username}]\\[mcget {session.ntlm.last.domain}]" If you want, you can also put some logic in the right-hand of the assignment, like if sometimes the user already put in USERNAME\DOMAIN: session.logon.last.username = if { [mcget "session.logon.last.username"] contains "\\" } { return [mcget "session.logon.last.username"] else { return "[mcget {session.ntlm.last.username}]\\[mcget {session.ntlm.last.domain}]" }