Z-Brush Problem - Texture from Polypaint limited to 2K

[Refracty]

Hi,
I am transfering polypaint to texture in Z-Brush but the resulting texture is always 2K.
I have created a new texture before in 4K or 1K (I need 4K) but the result is 2K!
Any ideas how to create a 4K texture based by polypainting?
Cheers




I am using Z-Brush 4R3

[Refracty]

got it.
The uv map settings (size) drive the texture resolution.