how to copy a folder and its content on a mapped drive using powershell

hi all
having problem in copying recent folder local remote pc using net use. here code

     $local = "c:\projects\deployments\" ;
     $path = "\\myip\deployments";
     $recent =  get-childitem -path $local | sort-object -property lastwritetime | select-object -last 1
     net use b: $path  /user:username password 
copy-item -path $recent  -destination "b:\" -recurse -force

    above script works perfect if take out $recent line , if specify exact folder name in $local    
      e.g  $local = "c:\projects\deployments\2014-10-13" ;

getting strange error when run script, directory running script tries in folder recent folder needs copying.

i sorted out, have write

copy-item -path $recent.fullname 

Windows Server  >  Windows PowerShell