Nested Echo Command Help

I am doing below :

$HOST_NAME1="webisstg70"

$count=1

$echo $HOST_NAME1 $count
webisstg70 1

$HOST_NAME=""

$HOST_NAME=`echo '$HOST_NAME'${count}`

$echo $HOST_NAME
HOST_NAME1

$NODE_NAME=`echo $`echo ${HOST_NAME}``

I get below error message

ksh: HOST_NAME1: not found

Could anyone please help me in identifying reason for error message. I am trying to first echo value of $HOST_NAME which itself is a variable (HOST_NAME1) so I am again echoing value of HOST_NAME1 variable to NODE_NAME variable.

You may find 'eval' more useful.

Thanks it works