Infrastructure Software

This is my Shell script. I am trying to call in the SQL plus program with the parameter and the shell script is registered as a concurrent program.
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PARAMETERS=`echo $1 |tr -d '\"'`
DB_USER_ID=`echo $PARAMETERS|cut -d" " -f3|cut -d"=" -f2`
CONN_STRING=$DB_USER_ID
REQ_DATE=`echo $PARAMETERS|cut -d" " -f9|cut -d"=" -f2`
timestamp=`date +%m-%d-%y-%H:%M:%S-%Z`
timestam=`date +%y-%m-%d`
sqlplus -s $CONN_STRING @ar_statement.sql $REQ_DATE
chmod 755 statement.sh
. statement.sh
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My Sql plus program is like this.
set pagesize 0
set heading off
set feedback off
spool $GEC_TOP/log/ge_ar_statement.sh
select output_file_name
from fnd_concurrent_requests
where trunc(actual_completion_date) = '&2';
spool off;
exit;
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When i run the concurrent program, i am getting the following error:

ar_statement: line 14: REQ_DATE: command not found
Enter value for 2:
User requested Interrupt or EOF detected.
ar_statement.sh: line 1: Enter: command not found
ar_statement.sh: line 2: User: command not found
ar_statement
Program exited with status 127

I am not strong at Unix Porgamming and i would request someone who can
help me out as soon as possible.

I need this solution quickly and thank everyone in advance.

Thanks.