Shell Programming and Scripting

I am testing a ksh script for email.
In the subject/content of the mail there is some dynamic variables like date and charges.
However these variables occupied the entire line erase other in that particular line

For e.g. there is a mail message:

This mail is intent...
Your total credit expenses of <<$USD amount>> for this period is ..
and you need to confirm the reciep...

This should be mailed as follows however it executed as the next one

This mail is intent...
Your total credit expenses of $100.00 for this period is ..
and you need to confirm the reciep...

Executed one

This mail is intent...
$100.00
and you need to confirm the reciep...

Any suggestions...

Please post your script so that we can troubleshoot

A portion of script here mail in MAIL_DRAFT file will send by replace the AMOUNT and DATE value:

CURRENTDATE=`date +%d" "%B" "%Y`
awk '{if ($0~/\$000.00/) {printf "\t\t\t$%s\n", AMOUNT} else if ($0~/DD MM YYYY/) {printf "DATE %s\n", DATE
VALUE} else {print $0}}' AMOUNT=$charge DATEVALUE="$CUR_DATE" $MAIL_DRAFT >> $MAIL_FILE

/usr/lib/sendmail -t < $MAIL_FILE
SENDMAILSTATUS=$?