[Solved] Template_icon_view items preview scale?

How do you scale the item previews for template_icon_view ?

preview_scale

The red is easy by doing this

col.template_icon_view(brush, "items", show_labels=True, scale=8)

but can’t figure out the green. I found icon_size here ,but had no luck with it.

https://docs.blender.org/api/master/bpy.types.ImagePreview.html?highlight=icon_size#bpy.types.ImagePreview.icon_size

Still trying to figure this out.

OK, I figured it out by looking at source code.

scale_popup=8