Select some objects depending on objects variable value

Is it possible to select x from y objects depending on objects variable value.

For example:

There is 1000 objects. All of them have variable takeMe.

I'd like to select 50 of them and only those where takeMe="yes".

System:Pick by comparison

But how to limit that "pick by comparision" to 50?

Use a system for loop, 1-50

For "whatever" 1 to 50 --->

-Pick object where object.takeMe ="yes" ---->

But wouldn't this select sometimes the same objects?