How do I set the page size measurements to millimeters

[danielsideas]

Im using drawio / diagrams.net and are trying to map out a room where all the measurements for the room are in millimeters.

I started this by setting the units to mm so I could set the object sizes to the measurements however I tried to set the page size accordingly and notices that the only units available for customisation are inches. Is there a way to change this so I can update the page size as per my preferred unit

The diagram below shows where I tried to change the page sized.

Note I am aware that I can to a conversion from mm to inches but i prefer to have everything in MM

[AlexDaniel]

Now you can choose the unit. I don't know if it's truly useful, as all other measurements are still in pt, but it's better than nothing.