Creating Dimension on Sketch then Extrude

[lgchan]

I have done a simple macro where I insert the parameter needed for the cuboid, then it will perform the cuboid out.
But, I would like to add a few lines of coding in my macro which can have dimension on the sketch after I sketch the square/rectangle, then proceed with extruding function.
If there are other macros that have problems, please help me amend them.

Thank you very much.