Korn Shell arrays

Good morning all,

I have a script that I wrote this morning that I can not figure out how to finish. This script will be used to kick a user out of my application. My goal is to prompt the user for the username of the person that they wish to kick off, retain that username in a variable, load in the userid associated with that username, and then use the userid to remove them from the system. My problem is, I want to propmt the user for the username, but the only way that I can kick someone out of the application is via the userid.

I am trying to take the following output:

UID  user  The rest is really useless information for this purpose ...
365  jx5h  T00A1AD.opr.statefarm.org  ECS_GUI  03/13/03 08:41:49:389920
447  jx5h  T0093E5.opr.statefarm.org  ECS_GUI  03/17/03 18:12:23:268080
450  c8zg  T000FDA.opr.statefarm.org  ECS_GUI  03/18/03 07:18:17:484342

retrieved with the following command:

ecs.ctl -U $euser -P $epass -C GUI_Server -M sf40ctm1 -cmdstr PGUI |grep -v Open |grep -v have |grep -v The

and feed the uid into the following command to remove them from the app:

ecs.ctl -U $euser -P $epass -C GUI_Server -M sf40ctm1 -cmdstr KICK $uid

Note: Currently I am printing some info to the user about the program, prompting
them for a username, and verifying that the username entered is currently logged
in to the application, and futher giving them only three attempts to enter a valid
username.

The following is what I have so far:

#!/usr/bin/ksh

logo="Remove ECS Users"

prmpt() {
clear
print "\n\t\t\t+----------------------------+"
print "\t\t\t|      ${logo}      |"
print "\t\t\t|\t - $(hostname) -\t     |"
print "\t\t\t+----------------------------+"
print "\n\n\n\n\n\tThis program will allow you to 'Kick' a user off of ECS."
print "    Please do not kick a user off of ECS without notifying them first!"
print "\n\tEnter the the userid of the person to be removed below."
print "\t        The userid will be the same as the SFID."
print "\nUserid -> \c"
read userid
}

pgui_out="/opt/incontrol/sf_scripts/admin/j8vy/pgui_rpt.txt"
euser=$(awk '{print $4}' /opt/incontrol/sf_scripts/xfile)
epass=$(awk '{print $5}' /opt/incontrol/sf_scripts/xfile)

set -A id $(ecs.ctl -U $euser -P $epass -C GUI_Server -M sf40ctm1 -cmdstr PGUI |grep -v The |grep -v have |grep -v Open |awk '{print $2}')

prmpt
cnt="-1"
while [[ ${userid} != ${id} ]]; do
if [[ ${cnt} < 2 ]] && [[ ${cnt} > "-1" ]]; then
   print "\nOops ... That user is not currently logged in!"
   print "Please enter a valid userid."
   sleep 3
  prmpt
elif [[ ${cnt} = 2 ]]; then
   print "\nYou have reached the maximum number or retries!"
   print "Please try again at a later time.\n"
   exit 1
fi
 let cnt+=1
done

Your thoughts are appreciated.
P.S. I would prefer to keep this in Korn Shell if it is possible. Thanks.