Hello, @alessio-spleen-castello,
Ah, yes ! You need to type in the initial number, in a decimal form, although counting will be, correctly, generated, with hexadecimal numbers !
For instance, if your numbers sequence have to begin with the hex number 1CE, you must write the decimal form of 1CE, that is to say the number 462, as the Initial number field of the Column / Multi selection Editor
Then, choose the Hex format and, possibly, check , or not, the Leading zeros option and click on the OK button !
Cheers,
guy038
P.S. : Hexadecimal number 1CE = 1 * 16^2 + 12 * 16^1 + 14 * 16^0 = 256 + 192 + 14 = 462