Powershell search regular expression in many Microsoft Word documents - regex

Question

I have a powershell script to search a string from word files as follows:
$searchStr = "ABC/2014/N/123"
$files = gci -path "c:\doc","d:\doc" -include "*.doc*","*.tp?" -recurse
$word = new-object -ComObject "word.application"
foreach ($file in $files) {
$doc = $word.documents.open($file.fullname)
if ($doc.content.find.execute($searchStr)) {
echo $file.fullname
}
$doc.close()
}
I want to enhance it to enable regex and insert it before the .execute() as this:
set $doc.content.find.text = "[A-Z]{2-5}\/[0-9]{4}\/N\/[0-9]{3}"
set $doc.content.find.matchwildcards = $true
However, the properties are read-only as it complains.
So, I try passing them as the parms in .execute()
PS C:\> $doc.content.find.execute
OverloadDefinitions
-------------------
bool Execute (Variant, Variant, Variant, Variant, Variant, Variant, Variant,
Variant, Variant, Variant, Variant, Variant, Variant, Variant, Variant)
How can I do it like this?
$doc.content.find.execute(Text:="[A-Z]{2-5}\/[0-9]{4}\/N\/[0-9]{3}", matchwildcards:=$true)
Many thanks.
It works now, thank you.
$searchStr = "CIS\/[0-9]{4}\/N\/[0-9]{3}"
$isRegexp = $true
$files = gci -path "g:\spc","h:\spc" -include "*.doc*","*.tp?" -recurse
$default = [Type]::Missing
$word = new-object -ComObject "word.application"
foreach ($file in $files) {
$doc = $word.documents.open($file.fullname, )
# expression.Execute(FindText, MatchCase, MatchWholeWord, MatchWildcards,
# MatchSoundsLike, MatchAllWordForms, Forward, Wrap, Format, ReplaceWith,
# Replace, MatchKashida, MatchDiacritics, MatchAlefHamza, MatchControl)
if ($doc.content.find.execute($searchStr,$default,$default,$isRegexp)) {
echo $file.fullname
}
$doc.close()
}