Input mask for text field of varying lengths

[pikomina]

I am trying to create an input mask for a client number. The format is 4 numeric digits, a dash, and then anywhere from 4-8 alphanumeric characters. However, the input mask that I have entered (0000-AAAAAAA) forces me to enter 8 characters on the right side of the dash. How can I create an input mask that can handle strings of varying lengths?

[missinglinq]

Actually, the Input Mask you posted requires 7 characters to the right, not eight!
But a little a makes the character optional, so try

0000-AAAAaaaa

Linq ;0)>

[pikomina]

Perfect! Thank you so much!

[missinglinq]

Glad we could help!

Linq ;0)>