what is the unit of "h" and "w" in Edit Shape ? How can I generate a shape with the desired size(pt) using the code?

[freeifly]

when I create a shape like this:

it turns out the actual shape size is 120pt * 120 pt, I tried to change "h" and "w" it doesn't help with the real size.
How can I generate a shape with the desired size(pt) using the provided code?