Remote computer ip in script

Hello

i wrote a script that list for each remote computer( by ip ) disk drive information, but cannot Retrieve remote computer ip variable inside my script

$ips=gc computersip.txt # multiple remote computers ip

icm $ips { 

Write-output "that is computer ip: $ip" #cannot Retrieve $ip value

gwmi win32_diskdrive 

}

how can i Retrieve remote computer ip......thank you