NGCGUI - How to increase font size in gtk entry box

Hello,

i works on retrofit a rotary table bandsaw cnc machine, and the programming is done in NGCGUI.
In the gmoccapy i implement a NGCGUI. Now i want to increase the entry box font size, to the operater better see the parameter values. The ngcgui is now looks like this:

I succeeded to increasethe parameter number, and the parameter comment font size.
But the entrybox value not.
The parameter comment font size i increased in file: pyngcgui.ui, adding Helvetica 18 to selected row on photo:


The parameter number "somehow" I increased in file pyngcgui.py file adding the selected row on photo:


But the most important, the entry box font value, i dont know how to increase.
Can someone help me please?

Best regards,
Attila.