Rename files recursively

hi expert,

i having hard time renaming files within subfolders, have script:

get-childitem  -recurse | {$_.name -match "^(_2014-|2014-)"} | % { rename-item $_ "_000000$($_.name)"}

it rename files on current folder in subfolders keeps throwing error;

rename-item : cannot rename because item @ filename  does not exist. appreciated

regards

here again:

get-childitem  -recurse -file -include '2014*','_2014*' |       foreach-object{          rename-item $_.fullname ('{0}\_000000{1}' -f $_.directory.fullname,$_.name)      }

watch out ther no whatif time. 

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¯\_(ツ)_/¯

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