Shell Programming and Scripting

Hey guys im trying to get this if statement to work and i dont know whats wrong. can anybody help?

if($author=~/\A[a-z]+\Z/i)&&(length($author!=0))
{
print " $author validation correct"
}
elsif($author!=~/\A[a-z]+\Z/i)&&(length($author=0))
{
$author='BLANK';
}
else
{
print " The AUTHOR -> $author <- is invalid please re-enter <a href=../assig1/ index.html>Click Here</a>";
}

it says it has a syntax error near the double amphisan but i dont know how how else to join to conditions in an if statement

any help is appreciated.

cheers

should be

Code:

if( ( $author=~/\A[a-z]+\Z/i ) && ( length($author) !=0 ) )

similar comment for elsif