Adding Dashes to the Serial Mask

Trying to setup a Serial Number Mask and would like to add dashes into the sequence. Epicor is not liking the mask setup of @@@ - ##### - #### - ###.

Has anyone been able to use base system to accomplished this.

Were you able to resolve this? I am in the same scenario. Thanks!

we were able to do it to a small degree, using the serial number Prefix and Suffix.

Were you able to get dashes into the serial number?