I was a bit confused with the way how font is specified for field and that took quite a while to figure it out. The final solution is
adding the following font definition into field format
Format: (Text, width: 20,font: #(name: "AngsanaUPC", size: 11))I assume it will affect everywhere this field is being shown. Still, I haven’t found a way to defined font per column.
It would be a lot better to use some sort of UI tool to simply this kind of things.