Question about Input Mask

I insert in a cell the input mask ### min . If I insert a number of three digits there are not problem ( for example 234 min). But if I insert a number of two digits I have _ that I don't want ( for example 12_min)

How can I solve my problem? Thank you

That's the default behavior, input mask is used to indicate the user the amount and type of characters he should enter in a field. 

I have a number which takes a sum of several field.

Then, this number value is copied into a text field (because I  need the $ to show up).

Unfortunately, it does not work. $ does not show up because the source field is a number field which itself cannot hold '$', of course. 

Please let me know how else I can have this text-field to show up with $. 

See the Sibling discount and the Hidden Sibling Discount : https://www.jotform.com//?formID=70208611384148

I have tried out the input mark, it does not work. As a matter, it expanded my sibling discount based on the number of  "#".  e.g.

input mask : $  ###.##

the actual amount is : $45.50

it shows up as: $  455.__ (wrong!)

Advise?

I have inspected your form, but I am not sure with which fields are you having issues with. There is also log of calculations and hidden fields, so I do not know what to check and test. I was also not able to find any field where input mask is turned ON. 

Please provide us more details about your issue. Tell  us with which fields you have issues and how do you want them to work. If possible also provide us a screenshot. 

Just to mention if you want to force your users to enter all numbers in field that is using input mask option, you need to check Fill Mask Validation option.

Here is my demo form: https://form.jotform.com/70255081277960 

Let us know if you need further assistance.