Udtextbox mask issues

When searching i come upon this thread:

New-UDTextBox -Mask for MAC Address? - PowerShell Universal - Ironman Software Forums

I have sort of the same issue with a simple mask i want to use:

basically a-z with a max 10 chars

how can this be done without having the ‘column’ effect?

These do not work:

New-UDTextbox -Mask @(’/[a-z]/’,’/{0,10}/’)
New-UDTextbox -Mask @(’/[1]{0,10}$/’)
New-UDTextbox -Mask @(’/[a-z]{0,10}$/’)


  1. a-z ↩︎

A mac address is just 6 groups of 2 hex chars right?
In which case, I had a go:

New-UDTextbox -Mask @('/[0-9a-fA-F]/','/[0-9a-fA-F]/','-','/[0-9a-fA-F]/','/[0-9a-fA-F]/','-','/[0-9a-fA-F]/','/[0-9a-fA-F]/','-','/[0-9a-fA-F]/','/[0-9a-fA-F]/','-','/[0-9a-fA-F]/','/[0-9a-fA-F]/','-','/[0-9a-fA-F]/','/[0-9a-fA-F]/')

Probably not the most concise but the problem I had with this is the input character does not lead it stays at position zero and fills forward which seems the wrong way around to me, I don’t know if that’s by design or if I’m doing something wrong

Also, as to why it’s so long winded, I initially tried to use '/[1-9a-fA-F]{2}/' to represent two characters, but it broke (not sure why) and wouldnt let me type into the box, so I ended up splitting it out.

@insomniacc - Thanks for posting this workaround

@adam - Following the release of 3.1.0 in July of '22 it appears that the Mask parameter of New-UDTextBox no longer accepts a string array. Is there a way that we can incorporate @insomniacc’s workaround again?