Randomize

[ramu2020]

I use the mathematic random functions as show in your example but it keep return me same number again and again everytime I run the setup.

[FrancescoT]

Each seed must be unique for the random number generation to be truly pseudo-random.
Please see the Serial Validation example project for detailed real-world usage of these functions.

Alternatively, it exists a 3rd party plug-in that covers this specific matter ...
http://www.installaware.com/forum/viewtopic.php?f=3&t=8460

Regards