How do I choose the higher of 2 variables?

I've got 3 global variables. VariableA & VariableB are both numbers that change according to different conditions.

When an object is created, I want to set VariableC to whichever is the highest of variables A & B. Is there an expression for this?

Sprite|On created|System|Set VariableC to _____(fill in the blank)_____

thanks in advance

https://www.scirra.com/manual/126/system-expressions

max()

thanks, that's what I needed