>>But I prefer to use hexadecimal value that will always result 4 bytes length.
>>
>>

>>m.lcNewID = SYS(2015) + RIGHT(TRANSFROM(Application.ThreadId, "@0"), 4)
>>

>>
>>What do you think, sir?
>>
>>
>>Regards,
>>Onytoo
>
>You are only creating the name of a variable, so the difference will be zero.

Actually, one: one byte per key value.