How to draw rectangle of size less than millimeter

I have written this in my macro
'
Part.SketchRectangle 0, 0, 0, 0.001, 0.1, 0, 1 ' (rectangle 1*100mm)
'
It works fine but if I change the widht of the rectangle to be lesstha millimeter the macro wont draw the rectangle

for example like this
'
Part.SketchRectangle 0, 0, 0, 0.0001, 0.1, 0, 1 ' (rectangle0.1*100 mm)
'

What do I do wrong?
Even if I record the macro to draw a very thin rectangle, therecorded macro wont work. Is this some already well known problem?I tried to find a solution by googleing but didnt get the asnwer.Thanks mates in advanceSolidworksApi macros