bash variable

Hi guys, need your help any work around on this?

Quote:

mypath=$(head -n 1 /tmp/xpath.txt) <--working fine able to read first line of file

any ideas on below:
Quote:

mypath=$(head -n 1 /tmp/$varpath) <--got a filename that is a variable this one does not seem to work mypath returns empty

Tried below but doesn't seem to work:

mypath=$(head -n 1 "/tmp/$varpath")

mypath=$(head -n 1 {/tmp/$varpath})

Thanks for any help.