Random Value Within A Range

How’s it goin’ bros! my name is pewewwewewee!!

Today, I have a question…
How can i get a random value within a range?

For example…
I want to get random value from 10-20… NOT 0-20.
In GD, the only option is the “Random value” which I think the value starts from 0 to your max value.

Advanced Thanks for the answers bros!

Easy, if you want a value in range [10; 20], just do:

10 + Random(10)

Because the first 10s is a fixed number to generate the lower limit, the others 10s are the random values to generate the random range, generalizing:

Random(Min, Max) = Min + Random(Max-Min)