material type number range question
I want to have an interval for which I could have external naming both for numbers and for letters. I want to have the option to name the material eg 111111111 or aabbccddg or aa11bb11nnn.
I have created a group, I have a for external numbering - from 00000000001 to 9999999999, but I cannot create another line for 00000000000a to zzzzzzzzzzz.
How can I do it??
Is it possible?