some commands like /var,/if and more doesn't work if u are using a single "/" in the editbox becuz it's trying to send the command to the server (it shouldn't do that and it doesn't do it in other commands, it should first check if there is such alias/command in the mirc and if it's doesn't so only then try to send it to the server)
/var %i = 1
send "var %i = 1" to the server
/if (1) blah
send "if (1) blah" to the server
i think it should fixed since it works in other commands