Hello @ll,

i have defined a float variable x

but when i try to get its value with PrintC " Variable x: %0.4f", x

the output is : -1.#IND

What does this mean?

Put in a few more debug messages, and track it's value. I have no clue what that means, it shouldn't even be able to do that.

thanks, for your honest answer!

You don't happen to have two different types of variables with the same name do you? (yeah, I know, wild shot in the dark.)

Maybe I'm wrong, but I don't think there is suppose to be a comma separating the first varible to be printed and the last quotation mark.
I think your statement should look like this:
PrintC " Variable x: %0.4f" x

The comma is optional but won't cause a problem. Looks like... x is indefinite, maybe? That's... not really a valid option for a number, usually... though if x were a ref variable, and tried to get parsed as a float... only thing I can think of, anyway.

Well, that or that it's thinking you mean the X axis (used as an argument for things like SetPos); normally you can use a variable called x because it's clear from context which it is, but perhaps with format string stuff (which is inherently untyped), it can't tell?