'expect' not matching server response string

I'm using a bash script to log into a telnet server and execute a number of commands. It looks like:

login_and_run.sh

#!/bin/bashunset TELNET_USER_NAME_STRINGunset TELNET_PASSWORD_STRINGunset TELNET_USER_NAMEunset TELNET_PASSWORDTELNET_USER_NAME_STRING=`cat SAP_output`TELNET_PASSWORD_STRING="Password:"TELNET_USER_NAME="UserNam3\r"TELNET_PASSWORD="Passw0rd\r"# Expect script starts hereexpect <<- DONE        spawn telnet localhost 50008        expect '$TELNET_USER_NAME_STRING'        send "$TELNET_USER_NAME"        sleep 3        expect "$TELNET_PASSWORD_STRING"        send "$TELNET_PASSWORD"        sleep 3        spawn ls        expect eofDONE

where

SAP_output:

Trying ::1...Trying 127.0.0.1...Connected to localhost.Escape character is '^]'.   ***********************************************   **********************************************   ****###*******####*****#######**************   **##***##****##**##****##****##************   ***##*******##****##***##****##**********   *****##*****########***######***********   ******##****##****##***##*************   **##***##**##******##**##************   ****###****##******##**##**********   **********************************   ********************************   Telnet Administration   SAP Java EE Application Server v7.50User name:

telnet logs in, I get the banner, but it stops there (as if the strings are not matching). Would it be safer to use wildcards instead of the exact response (and match only " User name: ")?