Have a drawing macro I'm updating, part of the macro requires the model (asm or prt) to be opened, have a custom property changed, then saved.  Now, i have seen it done a few different ways.  I want to do it all silently so the user sees none of the steps.

My question is what is the shortest, cleanest way to do it, if i have a known existing property and value that will not require any input, basically hard coded in the macro.   Also model will ALWAYS have the same name as the drawing, & drawing will only be associated with a single model/assembly)