Font size in expression builder

[jive]

Hi,
First of all , sorry english is not my first language.

I tryed to find a way to change the size of the font used in "Expression" , when you create a data item a windows open and you can add a lot of thing. Those font are just to small with a lot of bracket and other stuff it's pretty hard for my old eyes.

Did you know where is the paramater to change that 

I read a lot but I found nothing.

thanks for your help