Zbrush DivideHD in HDGeometry not working

Hello! I’ve been recently working on a mesh in Zbrush and sculpted HDGeometry on it. I’m already using three HD-subdivision levels in Zbrush, but for some reason it won’t subdivide any more, because the DivideHD button is grayed out. I’ve tried many non-destructive ways for HD-dividing the mesh but, nothing worked. Any solutions?

You’ve hit your HD polycount limit (499 mil). Subdividing again would give 2000 mil polys

Is there a way to change the polycount limit?