command inside the ksh script not working

Hi:
I'm trying to exucute a command inside a shell script. It is not working. However when i run the same command at the command line it works fine. I'm sending the code snippet and also sending error message. If any of you have an idea of what might be causing the problem, please help me.

if [ -n "${FILENAME}" ]
then
echo "\nCounting messages for event type ONE 11111 ..."
ConCommand="find . -name '$FILENAME' -exec grep -l $PATTERN '{}' /dev/null \;"
echo "\nConCommand -->$ConCommand<--"
VarResult=`$ConCommand`
echo "\n$VarResult"
else

The error I'm getting is
find: incomplete statement

I even tried to escape the "\" in the command. Even them I'm having the same problem.

Thanks,
SB

Change the command from -

ConCommand="find . -name '$FILENAME' -exec grep -l $PATTERN '{}' /dev/null \;"

To

ConCommand=`find . -name '$FILENAME' -exec grep -l $PATTERN '{}' /dev/null \;`