Hello @john55 

I found this community article that might be helpful 

Also a product idea that had been posted, encourage you to vote for it https://community.acumatica.com/ideas/need%2Dnumeric%2Dsupport%2Dfor%2Dattribute%2Dtype%2D3466

Thank you @pallikasharma11, I’m referring here to configuring an attribute in Common Settings.  I updated my question to be more clear.  I had previously voted for the product idea.

My apologies, can you give this Entry mask a try #,###

@pallikasharma11 

I’m familiar with using the # sign to limit user input to numeric values.  But #,### doesn’t prevent users from entering numbers greater than 100.  

Hi @john55 were you able to find a solution? Thank you!

One way to force this with Regex is:
\b(^[0-9]$|^[1-9][0-9]$|100)\b

This will only allow the numbers 0 - 100 and prevent negative values and decimal values.